Page 1 Application planning Electronic Weighing System SIWAREX WP251 Mounting Connection Operating Instructions Commissioning Scale parameters and functions Errors and messages Command lists Communication with SIMATIC S7-1200 Operation requiring official calibration Technical specifications Accessory 7MH4960-6AA01 Appendix ESD guidelines 11/2018 List of abbreviations A5E37203357-AD...
Page 2: Legal Information
Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.
Page 3: Table Of Contents
Table of contents Introduction..............................13 Purpose of the manual......................13 Document history........................13 Product compatibility......................14 Checking the consignment.....................14 Security information.......................14 Transportation and storage....................15 Basic knowledge required......................15 Notes on warranty........................15 Safety notes..............................17 General safety instructions.....................17 Description..............................19 Product overview........................19 Area of application.........................19 System integration in SIMATIC....................19 Application planning...........................21 Functions..........................21 Parameter assignment options....................21...
Page 4 Table of contents Shield connection........................31 Connection of digital outputs (4 x DQ)...................34 Connection of digital inputs (4 x DI)..................35 Connection of the analog output (1 x AQ)................36 Connection of RS485 serial interface..................36 Connection of Siebert display via RS485................37 6.10 Connection of the Ethernet interface..................37 6.11 Activation of write protection....................38 6.12...
Page 5 Table of contents Weighing steps........................55 8.2.1 Introduction..........................55 8.2.2 Operating mode NAWI (non-automatic weighing instrument) - Filling........56 8.2.3 Operating mode NAWI (non-automatic weighing instrument) - Removal......56 8.2.4 Operating mode GFI (gravimetric filling instrument)..............57 8.2.5 ACI/SCW operating mode (automatic catchweighing instrument / automatic checkweigher) - Filling......................58 8.2.6 ACI/SCW operating mode (automatic catchweighing instrument / automatic...
Page 6 Table of contents 8.4.1 Calibration with calibration weights..................75 8.4.2 Automatic calibration ......................78 DR 4 Output of calculated calibration digits................78 8.5.1 Overview..........................78 8.5.2 Calibration digits 0, 1, 2 (calculated)..................79 DR 5 Tare / zero memory.......................79 8.6.1 Overview..........................79 8.6.2 Effective tare weight - from specification 1, 2 or 3..............80 8.6.3 Effective tare weight (semi-automatic)...................81 8.6.4...
Page 7 Table of contents 8.12.8 Byte/Word swap options......................100 8.13 DR 13 RS485 parameters....................101 8.13.1 Overview..........................101 8.13.2 RS485 protocol........................102 8.13.3 RS485 baud rate........................103 8.13.4 RS485 character parity......................103 8.13.5 RS485 number of data bits....................103 8.13.6 RS485 number of stop bits....................103 8.13.7 RS485 Modbus address.......................103 8.13.8 Decimal place for Siebert indicator..................104 8.13.9...
Page 8 Table of contents 8.22.2 Parameter relation........................121 8.22.3 Fine weight...........................121 8.22.4 Fine trailing weight.......................121 8.22.5 Blocking time coarse signal....................122 8.22.6 Blocking time fine signal.......................122 8.22.7 Shut-off correction weight....................123 8.22.8 Coarse trailing weight......................123 8.22.9 Minimum material flow......................123 8.22.10 Filter depth of average value filter for material flow.............123 8.23 DR 24 Controller and filter parameters................124 8.23.1...
Page 9 Table of contents 8.27 DR 30 Process state......................142 8.27.1 Overview..........................142 8.27.2 Gross, net and tare process values..................147 8.27.3 Gross, net and tare weights....................147 8.27.4 Gross/Net weight x10......................147 8.27.5 Gross/Net process weight 2....................148 8.27.6 Refresh counter........................148 8.27.7 Actual weight of last dosing....................148 8.27.8 Totalizer 1 and Totalizer 2....................148 8.27.9...
Page 10 Table of contents 8.36.5 Protocol..........................168 8.36.6 Date, time..........................168 8.37 DR 47 Logbook........................169 8.38 DR 48 date and time 2 (for Modbus)..................170 Errors and messages..........................171 Message and error types.....................171 Message paths........................171 Evaluating errors/messages with the help of SIWATOOL...........172 Evaluating errors/messages with the help of the function block..........172 Evaluating errors/messages using Modbus.................172 Operating errors........................172 9.6.1...
Page 11 Table of contents 12.1.5 Adjustment and preliminary checking of the scale...............208 12.1.6 Calibration label........................208 12.2 Verification...........................208 12.2.1 Checking of parameters relevant to the verification.............208 12.2.2 Checking of parameters relevant to the device..............210 Technical specifications..........................213 13.1 Electrical, EMC and climatic requirements................217 13.2 Approvals..........................220 Accessory..............................223...
Page 12 Table of contents SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 13: Introduction
Introduction Purpose of the manual This manual contains all the information required for assembling installing, wiring and commissioning the SIWAREX WP251 electronic weighing system. Document history The most important changes in the documentation when compared with the respective previous edition are given in the following table. Manual edition Note 09/2018...
Page 14: Product Compatibility
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions only form one element of such a concept. Customer is responsible to prevent unauthorized access to its plants, systems, machines and networks.
Page 15: Transportation And Storage
Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends to apply product updates as soon as available and to always use the latest product versions. Use of product versions that are no longer supported, and failure to apply latest updates may increase customer’s exposure to cyber threats.
Page 16 Introduction 1.8 Notes on warranty The content reflects the technical status at the time of publishing. Siemens reserves the right to make technical changes in the course of further development. SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 17: Safety Notes
Safety notes General safety instructions WARNING Handling of the device/system by persons other than qualified personnel or ignoring the warning instructions can result in severe injuries or damages. This means only qualified personnel are permitted to handle this device/system. WARNING Commissioning is absolutely prohibited until it has been ensured that the machine in which the component described here is to be installed fulfills the regulations/specifications of Machinery Directive 89/392/EEC.
Page 18 Safety notes 2.1 General safety instructions SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 19: Description
Description Product overview SIWAREX WP251 is a versatile and flexible weighing module that can be used for operation as a non-automatic weighing instrument. The electronic weighing system can be used in SIMATIC S7-1200 and uses all features of a modern automation system, such as integrated communication, operator control and monitoring, the diagnostic system as well as the configuration tools in the TIA Portal.
Page 20 Description 3.3 System integration in SIMATIC Figure 3-1 System overview SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 21: Application Planning
Application planning Functions SIWAREX WP251 controls complex dosing and filling processes completely autonomously. The four digital outputs of the module can be used to directly control the dosing elements (coarse and fine flow). Maximum accuracy is achieved since the weighing process is fully independent of the CPU and its cycle time.
Page 22: Parameter Assignment With The Pc
Application planning 4.2 Parameter assignment options 4.2.2 Parameter assignment with the PC The scale parameters can be quickly assigned with the convenience of a Windows program using the "SIWATOOL V7" PC parameter assignment software. You can use the program for commissioning the scale without any knowledge of automation technology.
Page 23: Parameter Assignment With A Simatic Panel
The "Ready-for-Use" example application is included in the scope of delivery of the configuration package and is also available from Siemens Online Support. In addition to the function block, it contains a complete TIA HMI project for operation and commissioning of scales, which the user can edit in TIA.
Page 24 Application planning 4.2 Parameter assignment options Figure 4-2 SIWAREX WP251 in stand-alone operation A detailed description of the assignment of the holding registers can be found in section → Scale parameters and functions (Page 55). SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 25: Mounting
Mounting Installation guideline When installing the SIMATIC components together with the electronic weighing system described here, the setup, installation and wiring guidelines for the SIMATIC S7-1200 must be observed (see system manual "SIMATIC S7 S7-1200 automation system", order no.: A5E02486681). This manual describes additional installation and wiring aspects specific to the electronic weighing system.
Page 26: Coupling Mechanisms
Mounting 5.2 EMC-compliant installation 5.2.3 Coupling mechanisms Depending on the propagation medium (conducted or non-conducted) and the distance between the interference source and the device, interferences can enter the faulty device through four different coupling mechanisms: ● Electrical coupling ● Capacitive coupling ●...
Page 27: Mounting On The Simatic S7-1200
Mounting 5.3 Mounting on the SIMATIC S7-1200 Rule 4: Special EMC measures ● All inductors that are to be controlled should be connected with suppressors. ● For cabinet or enclosure lighting in the immediate range of your controller, use incandescent lamps or interference suppressed fluorescent lamps.
Page 28 Mounting 5.3 Mounting on the SIMATIC S7-1200 SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 29: Connection
Connection Overview All external connections (with the exception of the Ethernet interface) are made by means of the screw connectors (terminal block 1 to 4). ① ⑥ 24 V connection Digital output connection ② ⑦ Functional grounding connec‐ Digital input connection tion ③...
Page 30: Connection
Connection 6.3 Connecting the load cells 24 V connection The 24 V DC supply voltage is connected to the electronic weighing system via the corresponding terminals. Table 6-1 Connection of the 24 V supply Labeling Function +24 V voltage supply Ground voltage supply Functional grounding (grounded DIN rail) Connecting the load cells...
Page 31: Shield Connection
Connection 6.4 Shield connection 3. Twisted wire pairs that are also shielded are required for the specified cables: – Sensor cable (+) and (-) – Measuring voltage cable (+) and (-) – Supply voltage cable (+) and (-) Figure 6-2 Shielding in the screw gland We recommended that you use the cables listed in section →...
Page 32 Connection 6.4 Shield connection Figure 6-3 Installation of the shield connection element (example) SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 33 Connection 6.4 Shield connection Figure 6-4 Connection of strain gauge load cell with 4-wire system SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 34: Connection Of Digital Outputs (4 X Dq)
Connection 6.5 Connection of digital outputs (4 x DQ) Figure 6-5 Connection of strain gauge load cell with 6-wire system Connection of digital outputs (4 x DQ) CAUTION Unknown assignment of digital outputs The assignment of the digital outputs is not known at the time of connection. Digital outputs can be active immediately after turning on the power supply.
Page 35: Connection Of Digital Inputs (4 X Di)
Connection 6.6 Connection of digital inputs (4 x DI) during commissioning by assigning parameters of data record 7. The 24 V power supply of the digital outputs is provided via terminals 3L+ and 3M with electrical isolation. Table 6-3 Connection of the digital outputs Labeling Function DQ.0...
Page 36: Connection Of The Analog Output (1 X Aq)
Connection 6.8 Connection of RS485 serial interface Connection of the analog output (1 x AQ) CAUTION Unknown assignment of the analog outputs The assignment of the analog output is not known at the time of connection. The analog output can be active immediately after turning on the power supply. This may damage parts of the system.
Page 37: Connection Of Siebert Display Via Rs485
Connection 6.10 Connection of the Ethernet interface Connection of Siebert display via RS485 A Siebert display S102 with the order no. S102-W6/14/0R-000/0B-SM can be connected to the RS485 interface of the weighing module. Connect a 24 V DC supply to the Siebert display. Connect the latter to the RS485 interface of the weighing module as shown in the figure below.
Page 38: Activation Of Write Protection
Connection 6.11 Activation of write protection The following devices can be connected to the Ethernet interface: ● PC with SIWATOOL V7 service and commissioning program ● Operator panels or other HMI devices with Ethernet and Modbus protocol TCP/IP 6.11 Activation of write protection If a wire jumper is set between the module terminals P and PR, the parameter write protection will be activated.
Page 39: Attachment Of Calibration Protection Plate
Connection 6.12 Attachment of calibration protection plate 6.12 Attachment of calibration protection plate To operate SIWAREX WP251 as a calibratable electronic weighing system, the load cell connections must be protected against manipulation. To achieve this, mount the calibration protection plate included in the calibration set as shown in the following figure. Then attach the calibration protection plate to the associated terminals (see Overview (Page 29)).
Page 40 Connection 6.12 Attachment of calibration protection plate SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 41: Commissioning
IP/Modbus RTU interface. "SIWATOOL" is a component of the WP251 configuration package (see Accessories). The function block and the "Ready-for-use" example application can be downloaded for free from Siemens Online Support. Factory setting of the mode selector The module contains two DIP switches to the left of the Ethernet connector (accessible through the ventilation opening).
Page 42: Automatic Quick Calibration With Siwatool
Commissioning 7.3 Automatic quick calibration with SIWATOOL Automatic quick calibration with SIWATOOL 7.3.1 Overview General information on using the SIWATOOL V7 program can be found in section "Service with the SIWATOOL program (Page 47)". In order to perform the automatic quick calibration, the parameters marked in bold font in data records DR 3 and DR 10 must first be defined.
Page 43: Load Standard Parameters
Commissioning 7.3 Automatic quick calibration with SIWATOOL 7.3.3 Load standard parameters The quick setup is based on the standard settings of the weighing module. Therefore, the standard parameter settings must be reset prior to the quick setup. Firstly, service mode is activated;...
Page 44: Complete Automatic Calibration
Commissioning 7.3 Automatic quick calibration with SIWATOOL ● No. of mechanical support points If WP251 is connected, for example, to a platform weighing machine in which the platform is mounted on four load cells, the number of mechanical support points if 4. If it is connected to a tank that is mounted on one load cell and two fixed point mountings, there are 3 mechanical support points.
Page 45: Quick Calibration With Calibration Weights And Siwatool
Commissioning 7.4 Quick calibration with calibration weights and SIWATOOL Quick calibration with calibration weights and SIWATOOL 7.4.1 Introduction In order to perform the quick calibration with calibration weights, the parameters marked in bold font in data records DR 3 and DR 10 must first be defined. The procedure is described below.
Page 46: Calibration
Commissioning 7.4 Quick calibration with calibration weights and SIWATOOL You must subsequently enter the required parameters in data record DR 10 and send these to the module. Figure 7-4 Sending/receiving a data record / in SIWATOOL V7 ● No. of mechanical support points If WP251 is connected, for example, to a platform weighing machine in which the platform is mounted on four load cells, the number of mechanical support points if 4.
Page 47: Receive All Data
Commissioning 7.5 Service with the SIWATOOL program 7.4.6 Receive all data Activate the "Receive all data" function in the Communication menu. All parameters can now been saved as a backup file on the hard disk. If a module is replaced, the backup file can be downloaded to the new module within a few seconds.
Page 48: Windows And Functions Of Siwatool
Commissioning 7.5 Service with the SIWATOOL program 7.5.2 Windows and functions of SIWATOOL ① ③ Control elements for SIWATOOL and operation of the scale Offline values of the SIWAREX module ② ④ Parameter list of the SIWATOOL module Online values of the connected SIWAREX mod‐ ⑤...
Page 49: Offline Parameter Assignment
Commissioning 7.5 Service with the SIWATOOL program Figure 7-6 Sending/receiving a data record in SIWATOOL V7 7.5.3 Offline parameter assignment All scale parameters can be edited and saved without an electronic weighing system. This reduces the setup time. You can thus prepare the parameters for several scales in your office, and subsequently transfer them to the electronic weighing system during setup.
Page 50: Entering A Known Siwarex Ip Address
(Page 223). Install the program "Primary Setup Tool". When started, the program can determine the Siemens devices present in the network. The MAC (Media Access Control) address can be read on the front of the SIWAREX module. Every device has an MAC address which is unique worldwide.
Page 51: Entering Parameters With Siwatool
Commissioning 7.5 Service with the SIWATOOL program In order to archive data, all data can be exported from the SIWAREX module and saved as a file or printed. Note You can edit all data in the SIWAREX module in online mode. The changes are not automatically imported into the corresponding scale data block in the SIMATIC CPU.
Page 52: Firmware Update
Firewalls or other protection software may interfere with or prevent the transfer of data per TFTP protocol. In such cases, the respective protective mechanism must be temporarily deactivated for the duration of the update, or an alternative PC used. The latest firmware version can be found at Siemens Industry Online Support (https:// support.industry.siemens.com/cs/document/109476228).
Page 53 Following the transfer, the SIWAREX module must be switched off and then on again. This activates the new firmware. If the firmware file was not successfully uploaded, the following FAQ will assist you with troubleshooting: https://support.industry.siemens.com/cs/ww/en/view/109476228 (https:// support.industry.siemens.com/cs/document/109476228) SIWAREX WP251...
Page 54: Reading Out The Saved Scale Logs
Commissioning 7.5 Service with the SIWATOOL program Figure 7-8 Downloading the firmware with SIWATOOL 7.5.9 Reading out the saved scale logs The scale logs are saved powerfail-proof in the internal memory of the SIWAREX. You can read the logs with SIWATOOL using the "Logs" button A new window is opened, and all logs present in the weighing module are read out using "Refresh".
Page 55: Scale Parameters And Functions
Scale parameters and functions Parameters and functions The appropriate operating mode must be selected based on the requirements for the scale. For systems requiring official calibration, contact with the responsible weights and measures office at an early stage is recommended in order to define the correct operating mode and thus to correctly assign all parameters in advance.
Page 56: Operating Mode Nawi (Non-Automatic Weighing Instrument) - Filling
Scale parameters and functions 8.2 Weighing steps Coarse/Fine phase (based on settings from DR 23) Post-dosing (based on settings from DR 22) Checking (based on settings from DR 22) Emptying (based on settings from DR 25) Checking of actually emptied material Only for THW operating mode - totalizing hopper weigher (Page 59) Modus B 8.2.2 Operating mode NAWI (non-automatic weighing instrument) - Filling...
Page 57: Operating Mode Gfi (Gravimetric Filling Instrument)
Scale parameters and functions 8.2 Weighing steps In NAWI mode, WP251 also allows a set point to be set, which is then dosed automatically by the dosing functionality of the module. The dosing signals "Coarse flow/Fine flow" can be used to directly control the corresponding dosing elements.
Page 58: Aci/Scw Operating Mode (Automatic Catchweighing Instrument / Automatic Checkweigher) - Filling
Scale parameters and functions 8.2 Weighing steps 4. Coarse/fine dosing phase starts (weighing step 2) 5. If configured and necessary, post-dosing occurs (DR 22) (weighing step 3) 6. Dosing result is automatically checked and logged (weighing step 4) 7. Scale is emptied, if necessary (based on setting in DR 25) (weighing step 5) 8.
Page 59: Thw Operating Mode - Totalizing Hopper Weigher
Scale parameters and functions 8.2 Weighing steps In contrast to NAWI mode, the logging of the dosed single weight is written automatically to the log memory without an operator intervention. "Removal" means that the product to be weighed is dosed from the scale (for example, a silo on load cells with discharge valves).
Page 60: Scw Operating Mode (Automatic Checkweigher)
Scale parameters and functions 8.2 Weighing steps Weighing step Function Mode A Mode B Post-dosing (based on settings from DR 22) Checking (based on settings from DR 22) Checking (based on settings from DR 22) and to‐ taling Emptying (based on settings from DR 25) Waiting for standstill 1 and totaling Consequence ●...
Page 61: Dr 3 Calibration Parameters
Scale parameters and functions 8.3 DR 3 Calibration parameters be made dynamically. WP251 offers two options for checking: 1. Start manually triggered check with command 1101 (single weighing). WP251 waits in weighing step 0 for a new command from the PLC/user. When the command xyz is sent to the WP251, the command jumps directly to weighing step 4 and waits for standstill 2 (defined in DR 3).
Page 62 Scale parameters and functions 8.3 DR 3 Calibration parameters Table 8-1 Assignment of data record 3 Parameter Description Format Length Default Write Modbus protec‐ holding [bytes] tion register Data record number Contains no. of the da‐ USHORT 1000 ta record Length Data record length in‐...
Page 63 Scale parameters and functions 8.3 DR 3 Calibration parameters Parameter Description Format Length Default Write Modbus protec‐ holding [bytes] tion register Calibration digits 0 (meas‐ Calibration digits 0 de‐ LONG -3,999, 3,999,9 1024 ured) termined during cali‐ bration with calibration weight 0 Calibration digits 1 (meas‐...
Page 64 Scale parameters and functions 8.3 DR 3 Calibration parameters Parameter Description Format Length Default Write Modbus protec‐ holding [bytes] tion register Maximum tare load Range of subtractive, FLOAT 1034 (Page 69) semi-automatic taring [in % of maximum weighing range] Maximum negative zero Negative range of FLOAT 1036...
Page 65 Scale parameters and functions 8.3 DR 3 Calibration parameters Parameter Description Format Length Default Write Modbus protec‐ holding [bytes] tion register Reserve Reserve USHORT 1060 Weighing operating mode 0: NAWI – Filling USHORT 1061 (Page 74) 1: NAWI – Removal 10: GFI 20: ACI/SCW –...
Page 66: Scale Name
Scale parameters and functions 8.3 DR 3 Calibration parameters 8.3.2 Scale name You can select any name, but it may not exceed 12 characters. You can enter any designation. Note The scale name cannot be changed after official verification. 8.3.3 Unit of weight The following weight units are available for selection: milligram, gram, kilogram, metric ton, ounce, pound, short ton, and long ton The weight unit selection has no effect on the internal...
Page 67: Calibration Weights 0, 1, 2 And Calibration Digits 0, 1, 2
Scale parameters and functions 8.3 DR 3 Calibration parameters The maximum weighing range depends on the number and type of load cells used, and for scales requiring official calibration additionally on the scale interval and the resulting resolution of the scale. For scales not requiring official calibration, the maximum weighing range corresponds to the nominal load of all load cells (number of cells multiplied by the nominal load of one cell) minus the dead load (mechanical setup).
Page 68: Zero By Power-On When Tare ≠ 0
Scale parameters and functions 8.3 DR 3 Calibration parameters NOTICE If the scales are not being used in legal trade operation (no OIML restrictions), fully loaded scales can also be set to zero once this function is enabled. The function can, however, be limited by setting a maximum and minimum weight for zero by power-on.
Page 69: Weight Simulation Allowed
Scale parameters and functions 8.3 DR 3 Calibration parameters The current tare value is deleted if you switch between additive and subtractive taring. Note There is no automatic evaluation of whether there is sufficient load cell measuring range capacity for an additive tare. The plant constructor is responsible for this evaluation. 8.3.14 Weight simulation allowed For test purposes, weight simulation can be enabled instead of the actual weight determination...
Page 70: Maximum Negative Zero Setting Limit (Semi-Automatically)
Scale parameters and functions 8.3 DR 3 Calibration parameters If initial zeroing (zero setting at switch-on of the supply voltage) has been activated, the effect of the function can be limited with this parameter. The parameter is specified as a percentage of the "Maximum weight"...
Page 71: Standstill 1 - Range
Scale parameters and functions 8.3 DR 3 Calibration parameters WP251 has two independently formed standstill criteria (Standstill 1 and Standstill 2), which are queried at various points inside or outside the dosing cycle. In the following situations, Standstill 1 must be present in order to perform the corresponding action: Tare, Zero setting In the following situations, Standstill 2 must be present in order to perform the corresponding action: Tolerance check, Logging...
Page 72: Max. Waiting Time For Standstill 1
Scale parameters and functions 8.3 DR 3 Calibration parameters 8.3.24 Max. waiting time for standstill 1 The maximum waiting time for standstill 1 applies when a command is performed that is dependent on the occurrence of standstill 1. A technology message is generated if the command could not be executed during the waiting time because there is no standstill.
Page 73: Frequency Low Pass Filter 1
Scale parameters and functions 8.3 DR 3 Calibration parameters 8.3.28 Frequency low pass filter 1 There is a critically damped low-pass filter for suppression of disturbances. The diagram below shows the step response of the filter (f = 2 Hz). The entry "0" means that the filter is switched off.
Page 74: Weighing Operating Mode
Scale parameters and functions 8.3 DR 3 Calibration parameters 8.3.31 Weighing operating mode The parameter defines the operating mode of the scale. The following operating modes are available: 0: Non-automatic weighing instrument (NAWI) – Filling 1: Non-automatic weighing instrument (NAWI) – Removal 10: Gravimetric filling instrument (GFI) - Filling 20: Automatic catchweighing instrument / checkweigher (ACI/SCW) - Filling 21: Automatic catchweighing instrument / checkweigher (ACI/SCW) - Removal...
Page 75: Securedisplay Version
Scale parameters and functions 8.4 Calibration 8.3.36 SecureDisplay version For applications requiring official calibration, the "SecureDisplay" software is used to display the calibratable weight value. The parameter defines the version of the "SecureDisplay" software that is running in the HMI device. If the version is not entered correctly, a weight value will not be output in "SecureDisplay", and the display stays in the "Start Up"...
Page 76 Scale parameters and functions 8.4 Calibration The calibration procedure involves the following steps: ● Specify the calibration weight and other parameters in data record DR 3. ● Transfer the DR 3 data record to the scale. ● Trigger the "Set Calibration Point 0" when scale is empty. ●...
Page 77 Scale parameters and functions 8.4 Calibration You do not need to perform calibration if the calibration digits and the calibration weights are known to the weighing module described here. They are simply sent to SIWAREX by data record DR 3 and the scales are ready for use immediately. The SIWATOOL program facilitates rapid calibration.
Page 78: Automatic Calibration
Scale parameters and functions 8.5 DR 4 Output of calculated calibration digits 8.4.2 Automatic calibration Scales can be rapidly commissioned with automatic calibration. The accuracy of the scale greatly depends on the entered parameters and the mechanical properties of the scale. The best level of accuracy for the scale can be achieved by calibrating with calibration weights.
Page 79: Calibration Digits 0, 1, 2 (Calculated)
Scale parameters and functions 8.6 DR 5 Tare / zero memory Variable Note Type Default Min. Max. Modbus Register (byt Calibration dig‐ Calibration digits 0 LONG 200000 1600000 1204 its 0, 1, 2 (calcu‐ (calculated): lated) (Page 79) calibration digits calculated by 'au‐...
Page 80: Effective Tare Weight - From Specification 1, 2 Or 3
Scale parameters and functions 8.6 DR 5 Tare / zero memory Variable Note Type Read/ Default Min. Max. Modbus write Register (byt protec‐ tion Application Information about USHORT 1216 which application the DR belongs to Version identifi‐ Current data record USHORT 65635 1217...
Page 81: Zero By Power-On (Value When Switching On)
Scale parameters and functions 8.7 DR 6 Limits 8.6.4 Zero by power-on (value when switching on) If the automatic zero by power-on is configured, the scale is automatically set to "Zero" when the power supply is switched on provided the gross weight is within the defined zero setting limits.
Page 82 Scale parameters and functions 8.7 DR 6 Limits Variable Note Type Length Default Min. Max. Modbus (bytes) Register Application Information about USHORT 1236 which application the DR belongs to Version identifier Current data re‐ USHORT 65635 1237 cord version infor‐ mation Limit reference (limits Gross / net basis of...
Page 83 Scale parameters and functions 8.7 DR 6 Limits Variable Note Type Length Default Min. Max. Modbus (bytes) Register Limit value 1 ON, limit Switch-off point for FLOAT maxi‐ maxi‐ 1244 value 2 ON, limit value Limit 1 1 OFF, limit value 2 num‐...
Page 84: Limit Value 1 On, Limit Value 2 On, Limit Value 1 Off, Limit Value 2 Off
Scale parameters and functions 8.7 DR 6 Limits 8.7.2 Limit value 1 ON, limit value 2 ON, limit value 1 OFF, limit value 2 OFF The switch-on and switch-off points can be specified separately for each limit as a percentage of the measuring range or as absolutely values (based on "Limit reference"...
Page 85: Limit 3 - Empty
Scale parameters and functions 8.8 DR 7 Process interfaces 8.7.4 Limit 3 - empty This parameter defines the time starting from which the scale is empty. The unit is expressed either as a percentage of the maximum weight or in the weight unit depending on the "Limit reference"...
Page 86 Scale parameters and functions 8.8 DR 7 Process interfaces Variable Note Type Default Min. Max. Modbus Register (byt Assignment of Code 0: No command as‐ USH‐ 1999 1304 digital input DI. signed 0, DI.1, DI.2, 1..32759 Command is DI.3 (Page 89) triggered at a positive edge 32760...32767: Transition...
Page 87 Scale parameters and functions 8.8 DR 7 Process interfaces Variable Note Type Default Min. Max. Modbus Register (byt 1..32759 Command is triggered at a positive edge 32760...32767: Transition for steps 0 to 7 (positive edge) 32769 … 65527 Com‐ mand (command code +32768) is triggered at a negative edge 65528...65535: Transition...
Page 88 Scale parameters and functions 8.8 DR 7 Process interfaces Variable Note Type Default Min. Max. Modbus Register (byt Substitute val‐ Substitute value for DQ 0 1314.16 ue for DQ 0, 1, following fault or SIMATIC 2, 3 following CPU STOP fault or SIMAT‐...
Page 89: Assignment Of Digital Input Di.0, Di.1, Di.2, Di.3
Scale parameters and functions 8.8 DR 7 Process interfaces Variable Note Type Default Min. Max. Modbus Register (byt End value for Value at which 20 mA is to FLOAT maximum maximum 1320 the analog out‐ be output weighing weighing put (Page 93) range range Output value...
Page 90: Input Filtering (Hardware Setting)
Scale parameters and functions 8.8 DR 7 Process interfaces Function assignment of input DI.0, DI.1, DI.2, DI.3: Function code Assignment (decimal) Not assigned 1 … 32759 Command code is triggered at a positive edge (0 → 1 transition) 32760 ... 32767 Transition for steps 0 to 7 (positive edge) 32769 …...
Page 91: Response Of Digital Outputs To Faults Or Simatic Stop
Scale parameters and functions 8.8 DR 7 Process interfaces status bits in order to directly control the corresponding dosing elements or the associated relays of SIWAREX WP251. See also Errors and messages (Page 171) 8.8.5 Response of digital outputs to faults or SIMATIC STOP This parameter allows you to define the response of the digital outputs following a fault of the SIWAREX module or SIMATIC STOP.
Page 92: Analog Output Range
Scale parameters and functions 8.8 DR 7 Process interfaces NOTICE Risk to the plant If an output is set following a fault (operating error), this can pose a risk for the plant. Ensure that the parameters are correctly set. 8.8.7 Analog output range This parameter is used to define the output current range.
Page 93: Start Value For The Analog Output
Scale parameters and functions 8.8 DR 7 Process interfaces 8.8.10 Start value for the analog output This parameter defines the start value of the scaling of the analog output and thus corresponds to 0 mA or 4 mA, depending on the setting. The value can be greater or less than the end value. 8.8.11 End value for the analog output This parameter defines the end value of the scaling of the analog output and thus corresponds...
Page 94: Dr 8 Date And Time
Scale parameters and functions 8.10 DR 9 module information DR 8 date and time The weighing module has its own hardware clock. The current date and time are specified by or read from data record DR 8. The clock is buffered with a capacitor and can continue operating for up to approximately 70 hours without supply voltage.
Page 95: Dr 10 Load Cell Parameters
Scale parameters and functions 8.11 DR 10 Load cell parameters Variable Note Type Leng Default Min. Max. Modbus registers (byte Serial number Serial number CHAR[12] " " 1358 Firmware type - String header UBYTE[2] 1364 header Firmware type Firmware type CHAR[2] 1365 FW version 1st po‐...
Page 96: Number Of Support Points
Scale parameters and functions 8.11 DR 10 Load cell parameters Variable Note Type Lengt Default Min. Max. Modbus registers (bytes Current data record version infor‐ USH‐ 65635 1403 mation Version identifier Reserve Reserve USH‐ 1404 Reserve Reserve USH‐ 1405 Number of support Number of support points USH‐...
Page 97: Load Cell Characteristic Value
The load cell characteristic value is required to correctly interpret the output voltage from the load cell. When Siemens WL series load cells are used, the exact characteristic value can be read from label on the cell. If the exact characteristic value of the utilized cell(s) is not available, a rounded value can also be specified.
Page 98 Scale parameters and functions 8.12 DR 12 Ethernet parameters Variable Note Type Lengt Default Min. Max. Modbus reg‐ isters (bytes Device MAC ad‐ Device MAC address 1 USHORT 1504 dress (Page 99) Device MAC address 2 USHORT 1505 Device MAC address 3 USHORT 1506 Device MAC address 4...
Page 99: Device Mac Address
Scale parameters and functions 8.12 DR 12 Ethernet parameters Variable Note Type Lengt Default Min. Max. Modbus reg‐ isters (bytes Word swap for 0: Little endian (LSB first) SHORT 1545.13 32-bit values 1: Big endian (MSB first) (Page 100) (MODBUS TCP port 502) Bit 4 Reserve...
Page 100: Port Mac Address
Scale parameters and functions 8.12 DR 12 Ethernet parameters 8.12.3 Port MAC address Each SIWAREX module has a unique MAC port address. This MAC address cannot be changed by the user. 8.12.4 IP address The IP address can be changed using the Primary Setup Tool, SIWATOOL or the SIMATIC function block (see section "IP address for SIWAREX (page 52)").
Page 101: Dr 13 Rs485 Parameters
Scale parameters and functions 8.13 DR 13 RS485 parameters 8.13 DR 13 RS485 parameters 8.13.1 Overview The parameter assignment of the RS485 interface occurs in data record DR 13. If the interface is not used, the default values can be retained. Table 8-12 Assignment of data record 13 Variable...
Page 102: Rs485 Protocol
Scale parameters and functions 8.13 DR 13 RS485 parameters Variable Note Type De‐ Min. Max. Modbus fault registers (byt Byte swap 0: Yes 1564.8 for text 1: No fields (Page 104) Byte swap 0: Big endian (MSB first) 1564.7 for 16-bit 1: Little endian (LSB first) values (Page 104)
Page 103: Rs485 Baud Rate
Scale parameters and functions 8.13 DR 13 RS485 parameters 8.13.3 RS485 baud rate This parameter defines the baud rate for the RS485 interface. Function code Baud rate 1 200 bps 2 400 bps 9 600 bps 3 (default) 19 200 bps 38 400 bps 57 600 bps 115 000 bps...
Page 104: Decimal Place For Siebert Indicator
Scale parameters and functions 8.14 DR 14 SIMATIC interface parameters 8.13.8 Decimal place for Siebert indicator A fixed decimal place must be specified if a Siebert indicator is used. The following values are permitted: 0 ... 4 8.13.9 MODBUS RTU response delay This parameter defines the delay of a response to a data request by the MODBUS RTU master (in ms).
Page 105: Selection Of Process Value 1, 2
Scale parameters and functions 8.14 DR 14 SIMATIC interface parameters 8.14.1 Selection of process value 1, 2 The weighing module can communicate with an S7-1200 CPU in two ways: Via the I/O only or by reading/writing complete data records. The I/O is faster in this case and exhibits a higher performance because the data is made available to the S7-1200 or SIWAREX automatically in each PLC cycle.
Page 106: Dr 15 Tare Default Value 1
Scale parameters and functions 8.15 DR 15 tare default value 1 Table 8-15 Structure of status of analog output, digital outputs, and digital inputs Byte 0 of dw_Process‐ Byte 1 of dw_Process‐ Byte 2 of dw_Process‐ Byte 3 of dw_Process‐ Value1/2 Value1/2 Value1/2...
Page 107: Dr 16 Weight Simulation
Scale parameters and functions 8.16 DR 16 Weight simulation 8.16 DR 16 Weight simulation 8.16.1 Overview Specifying a weight value using data record DR 16 disables the measuring input of the SIWAREX module and "simulates" a weight with the specified value. The SIWAREX module must first be enabled for simulation mode in DR 3 and then switched to simulation mode with command 3 ("Weight Simulation on").
Page 108: Dr 17 Control Analogue Output
Scale parameters and functions 8.17 DR 17 Control analogue output 8.17 DR 17 Control analogue output 8.17.1 Overview If data record DR 17 is configured as the source for the analog output (see Analog output source (Page 92)), specifying a control output sends a corresponding output current at the analog output.
Page 109: Dr18 Control Digital Outputs
Scale parameters and functions 8.18 DR18 Control digital outputs 8.18 DR18 Control digital outputs 8.18.1 Overview If one or more digital outputs were defined in data record DR 7 for controlling using data record DR 18 (see Assignment of digital output DQ.0, DQ.1, DQ.2, DQ.3 (Page 90)), this output can be controlled using data record DR 18.
Page 110: Specification For Digital Outputs Dq.0, Dq.1, Dq.2, Dq.3
Scale parameters and functions 8.18 DR18 Control digital outputs Variable Note Type Length De‐ Min. Max. Modbus fault registers (bytes) Reserve Reserve 1620.11 Reserve Reserve 1620.10 Reserve Reserve 1620.9 Transition 0 Transition for weighing step 0 1620.8 Transition 1 Transition for weighing step 1 1620.7 Transition 2 Transition for weighing step 2...
Page 111: Dr 20 Single Set Point
Scale parameters and functions 8.19 DR 20 Single set point 8.19 DR 20 Single set point 8.19.1 Overview The set point amount to be dosed is specified in the data record. Procedure ● Specify the desired set point ● Transfer DR 20 to SIWAREX WP251 Table 8-20 Assignment of data record 20 Variable...
Page 112: Dr 21 Total Set Point
Scale parameters and functions 8.20 DR 21 Total set point 8.20 DR 21 Total set point 8.20.1 Overview The total set point is interpreted in ACI and AWI modes as the number of containers to be dosed in continuous operation. In THW mode, it represents the total amount.
Page 113: Dr 22 Tolerance Parameters
Scale parameters and functions 8.21 DR 22 Tolerance parameters 8.21 DR 22 Tolerance parameters 8.21.1 Overview In the data record you specify the tolerance limits that are to be used in a tolerance check by WP251. You can define two tolerance bands around the set point. The result of the tolerance check is available in AWI Status.
Page 114 Scale parameters and functions 8.21 DR 22 Tolerance parameters Variable Note Data Lengt RW De‐ Modbus type fault registers (byte Parameter rela‐ 0: In reference to the set USH‐ 1648 tion (Page 116) point in DS20, you inter‐ pret the tolerance specifi‐ cations as percentages (default) 1: As weight value, you...
Page 115 Scale parameters and functions 8.21 DR 22 Tolerance parameters Variable Note Data Lengt RW De‐ Modbus type fault registers (byte Behavior in 0: Weighing cycle is not USH‐ 1659 case of TH1 er‐ stopped and is comple‐ ror (Page 118) ted with "Dosing comple‐...
Page 116: Parameter Relation
Scale parameters and functions 8.21 DR 22 Tolerance parameters Variable Note Data Lengt RW De‐ Modbus type fault registers (byte Pulse duration Fine signal ON duration TIME 1662 for pulse post when "Post-dosing with dosing pulsing" is selected (Page 118) Number of not Number of cycles during USH‐...
Page 117: Tolerance Limit Th2
Scale parameters and functions 8.21 DR 22 Tolerance parameters The tolerance limits are calculated based on OIML R61 "Maximum permissible errors in service Class X1". The TL tolerance limits are calculated automatically in accordance with the prepack‐ aging directive. The TH limits in DR 22 are interpreted as absolute weights in the weight unit.
Page 118: Behavior In Case Of Th1 Error
Scale parameters and functions 8.21 DR 22 Tolerance parameters 8.21.7 Behavior in case of TH1 error The parameter defines the module response following a tolerance error of class "Greater than TO1". The following options are available: 0: Weighing cycle is not stopped and is always completed with "Dosing completed". 1: Weighing cycle is stopped.
Page 119: Number Of Not Controlled Weighings
Scale parameters and functions 8.22 DR 23 Material parameters 8.21.10 Number of not controlled weighings This parameter defines how many cycles will not be checked for tolerance during continuous operation in AWI mode. The first dosing cycle of the continuous operation is always checked for tolerance, however.
Page 120 Scale parameters and functions 8.22 DR 23 Material parameters Variable Note Type Length De‐ Max. Modbus regis‐ fault ters (bytes) Application Information about which application USH‐ 1674 the data record belongs to Version iden‐ Current data record version informa‐ USH‐ 65635 1675 tifier...
Page 121: Parameter Relation
Scale parameters and functions 8.22 DR 23 Material parameters 8.22.2 Parameter relation The parameter defines how the specifications for the fine weight and trailing weight are to be interpreted. The following options are available for selection: Function Meaning code 0 (default) Fine and trailing weights are interpreted as specified percentages of the set point (DS 20).
Page 122: Blocking Time Coarse Signal
Scale parameters and functions 8.22 DR 23 Material parameters Figure 8-6 Trailing weight The shut-off points for the fine and coarse signals are corrected or optimized automatically during operation when the controller is activated (DR 24). The fine and trailing weights currently used by WP251 can be seen in DR 31 (always expressed in DR 31 in the weight unit).
Page 123: Shut-Off Correction Weight
Scale parameters and functions 8.22 DR 23 Material parameters 8.22.7 Shut-off correction weight This parameter enables influences that occur during dosing (e.g. overpressure or underpressure) to be taken into account in determining when the set point weight is reached. The setting conforms to the "Parameter relation" setting and can thus be an absolute weight or a percentage of the set point.
Page 124: Dr 24 Controller And Filter Parameters
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23 DR 24 Controller and filter parameters 8.23.1 Overview The parameters of the proportional controller and other filter parameters are defined in this data record. Table 8-24 Assignment of data record 24 Variable Note Type...
Page 125 Scale parameters and functions 8.23 DR 24 Controller and filter parameters Variable Note Type Lengt De‐ Min. Max. Modbus regis‐ fault ters (byte Controller dead‐ Lower limit of controller deadband FLOAT 1708 band - low limit (if the dosed weight is within the control‐ of proportional ler deadband, no further control occurs) controller...
Page 126: Parameter Relation
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23.2 Parameter relation This parameter defines the unit in which the "Maximum corrective action" and "Controller deadband - upper/lower limit" parameters (DR 24) must be interpreted. The following options are available: Function Meaning...
Page 127: Control Factor For Fine Time Controller
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23.5 Control factor for fine time controller The controller changes the coarse shut-off point by changing the fine weight. + (K * D Fine Diff Fine weight for current weighing Fine weight of next weighing Control factor for fine time controller Material flow at time fine signal was switched off...
Page 128: Fine Time Controller Work Cycle
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23.10 Fine time controller work cycle This parameter defines the controller behavior in continuous operation. Function Meaning code 0 (default) Controller only works in control weighing Controller works in any weighing cycle 8.23.11 Selection for dosing filter For shut-off of the "coarse"...
Page 129: Frequency Low Pass Filter 2
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23.12 Frequency low pass filter 2 There is a critically damped low-pass filter for suppression of disturbances. The diagram below shows the step response of the filter (f = 2 Hz). The entry "0" means that the filter is switched off.
Page 130: Depth Average Filter
Scale parameters and functions 8.23 DR 24 Controller and filter parameters 8.23.14 Depth average filter Depth average filter 2 is used to damp the weight value against periodic disturbances. The weight value is calculated from the average of the n (n = max. 250) most recent weight values calculated by the weighing module every 10 ms.
Page 131: Dr 25 Dosing Device Parameters
Scale parameters and functions 8.24 DR 25 Dosing device parameters 8.24 DR 25 Dosing device parameters 8.24.1 Overview This data record provides parameters that relate to the scale (dosing system) and are independent of the material. Table 8-25 Assignment of data record 25 Variable Note Type...
Page 132 Scale parameters and functions 8.24 DR 25 Dosing device parameters Variable Note Type Leng De‐ Min. Max. Mod‐ fault (byte regis‐ ters Weighing start op‐ 0: No zero setting/taring USH‐ 1739 tions (Page 135) 1: With zero setting 2: With taring 3: With preset tare weight from DR 15 4: With preset tare weight from...
Page 133: Maximum Single Set Point
Scale parameters and functions 8.24 DR 25 Dosing device parameters Variable Note Type Leng De‐ Min. Max. Mod‐ fault (byte regis‐ ters Number of opti‐ Number of single fillings that USH‐ 1760 mized single fillings must be made with coarse and (THW) (Page 137) fine flow Only relevant for THW loading mode 1 and 2.
Page 134: Fine" Set Value For Analogue Output
Scale parameters and functions 8.24 DR 25 Dosing device parameters 8.24.4 "Fine" set value for analogue output The analog output of WP251 can be used for direct activation of a dosing element (e.g. vibratory pan, pump, etc.). The parameter "Fine set value for analogue output" is specified as a percentage (0…100%) and references the range of the analog output set in DR 7 (0/4-20 mA).
Page 135: Weighing Start Options
Scale parameters and functions 8.24 DR 25 Dosing device parameters 8.24.8 Weighing start options This parameter defines the first action of an automatic dosing cycle to be executed (weighing step 1). The following options are available: Function Meaning code The dosing starts directly without zero setting or taring WP251 sets the scale to zero and then starts the dosing operation 2 (default) WP251 tares the scale and then starts the dosing operation...
Page 136: Loading Mode For Single Fillings (Thw)
Scale parameters and functions 8.24 DR 25 Dosing device parameters ● The "Continue weighing (1141)" command continues the dosing cycle. → After weighing step 2 is complete, WP251 jumps to "Stopped" state. The "Check stop active" bit is set in the AWI Status, and the "Check stop follows" bit is reset. ●...
Page 137: Emptying Time
Scale parameters and functions 8.24 DR 25 Dosing device parameters 8.24.14 Emptying time The parameter defines a fixed time during which the emptying signal is activated in the emptying step. It applies only when function code 2 (Emptying according to specified time) is selected as the emptying option in DR 25.
Page 138: Dr 28 Additional Strings For Log
Scale parameters and functions 8.25 DR 28 Additional strings for log 8.25 DR 28 Additional strings for log 8.25.1 Overview DR 28 provides the option of defining four user-definable text strings with 16 characters each. A selection code is used to define which of the four text strings are to be written in the log. For example, four material names can be predefined and the appropriate material name for a batch can be selected and logged.
Page 139: Strings 1, 2, 3 And 4
Scale parameters and functions 8.26 DR 29 Configuration of technology messages 8.25.2 Strings 1, 2, 3 and 4 Four user-definable text strings with 16 characters each are available. 8.25.3 Sting selection for automatic logging This parameter defines whether and, if so, which string is to be printed in the log. The following options are available: Function Meaning...
Page 140 Scale parameters and functions 8.26 DR 29 Configuration of technology messages Variable Note Type Length De‐ Min. Max. Modbus (bytes) fault registers Version identifier Current data record version infor‐ USH‐ 65535 1815 mation 2000 Technological er‐ At least one technology error ex‐ B16_0 1816 ists (group error)
Page 141 Scale parameters and functions 8.26 DR 29 Configuration of technology messages Variable Note Type Length De‐ Min. Max. Modbus (bytes) fault registers 2110 Blocking time Blocking time fine signal violation B17_1 1817 "fine" error After expiration of the blocking time fine signal, the fine shut-off point was already exceeded.
Page 142: 8.27 Dr 30 Process State
Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Length De‐ Min. Max. Modbus (bytes) fault registers 2099 Factory settings Note for the user that the factory B17_15 1817 loaded settings were loaded Reserve Reserve FLOAT 1818 8.27 DR 30 Process state 8.27.1...
Page 143 Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Lengt De‐ Mod‐ fault bus reg‐ (byte isters NA‐ 1/4d zero Set if gross is less than ± 0.25 d B16_0 3004 Out of weighing range Set if the gross weighing range is ex‐ B16_1 3004 Sta‐...
Page 144 Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Lengt De‐ Mod‐ fault bus reg‐ (byte isters Analog output error Analog output error B16_1 3005 Stand-alone operation Set when stand-alone operation is se‐ B16_1 3005 lected at DIP switch Start up Startup has taken place or factory set‐...
Page 145 Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Lengt De‐ Mod‐ fault bus reg‐ (byte isters Weighing step 0 Dosing is in step 0 B16_0 3006 Sta‐ Weighing step 1 Dosing is in step 1 B16_1 3006 Weighing step 2 Dosing is in step 2...
Page 146 Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Lengt De‐ Mod‐ fault bus reg‐ (byte isters Blocking time active Blocking set point/actual value compar‐ B16_1 3007 ison is running (no shut-off of dosing signals occurs during the time) Continuous mode ac‐...
Page 147: Gross, Net And Tare Process Values
Scale parameters and functions 8.27 DR 30 Process state Variable Note Type Lengt De‐ Mod‐ fault bus reg‐ (byte isters Date & time Day in month USH‐ rw 1 3041 (Page 148) Date & time Hour USH‐ rw 0 3042 (Page 148) Date &...
Page 148: Gross/Net Process Weight 2
Scale parameters and functions 8.27 DR 30 Process state 8.27.5 Gross/Net process weight 2 These are the high-resolution, internal process values of the gross and net weight after filtering according to the settings in data record 24. 8.27.6 Refresh counter Measured values are re-calculated every 10 ms in the SIWAREX module.
Page 149: Number Of Dosing Operations In Continuous Operation
Scale parameters and functions 8.28 DR 31 Process state extended 8.27.12 Number of dosing operations in continuous operation The parameter provides information on how many dosing / single filling operations have been carried out since the last start of continuous operation. 8.27.13 Difference set point/actual value The parameter shows the difference of set point to actual value of the last check (SCW mode).
Page 150 Scale parameters and functions 8.28 DR 31 Process state extended Variable Note Type Length RW Default Min. Max. Modbus (bytes) registers Current status digital in‐ Current status of input 1 B16_1 3314 put DI.0, DI.1, DI.2 and DI.3 (Page 152) Current status digital in‐...
Page 151: Unfiltered Digit Value
Scale parameters and functions 8.28 DR 31 Process state extended Variable Note Type Length RW Default Min. Max. Modbus (bytes) registers FLOAT 65535 3328 Current set point single Currently calculated set point filling of a single filling (only rele‐ vant for THW mode of opera‐ tion) Tolerance limits TH2, High limit tolerance band 2...
Page 152: Current Analog Output (Digits)
Scale parameters and functions 8.28 DR 31 Process state extended 8.28.6 Current analog output (digits) Currently output current at analog output with 16-bit resolution. Note This parameter can also be set in DR 14 as process value in the SIMATIC I/O so that cyclic reading of DR 31 is not necessary! 8.28.7 Current status digital input DI.0, DI.1, DI.2 and DI.3...
Page 153: Current Load Cell Signal In Mv
Scale parameters and functions 8.29 DR 32 Error messages 8.28.11 Current load cell signal in mV Display of currently measured signal voltage of the load cell(s) between the SIG+ and SIG- terminals in millivolts (mV). 8.28.12 Current fine weight This parameter indicates the calculated fine weight currently used by WP251. The value can differ from the specification in DR 23 because it may have been adjusted by the proportional controller.
Page 154 Scale parameters and functions 8.29 DR 32 Error messages The individual error messages are presented and explained in detail in section Errors and messages (Page 171). The following table is used only for breaking down the individual messages into their message bits. Table 8-30 Assignment DR 32 Variable...
Page 155 Scale parameters and functions 8.29 DR 32 Error messages Variable Note Type Length De‐ Mod‐ (bytes) fault regis‐ ters 2004 Trace memory full Cyclic trace recording aborted because Bit_4 3505 memory is full Reserve Reserve Bit_5 3505 Reserve Reserve Bit_6 3505 2100 Automatic tare / zero‐...
Page 156 Scale parameters and functions 8.29 DR 32 Error messages Variable Note Type Length De‐ Mod‐ (bytes) fault regis‐ ters 2117 Maximum corrective Maximum corrective action of the fine sig‐ Bit_8 3506 action of the fine signal time nal time controller exceeded (defined in controller exceeded DR24) 2118 Minimum fine weight...
Page 157 Scale parameters and functions 8.29 DR 32 Error messages Variable Note Type Length De‐ Mod‐ (bytes) fault regis‐ ters 7056 Parameter error DR 7 See "Additional information" for more in‐ Bit_14 3507 formation 7057 Parameter error DR 8/ See "Additional information" for more in‐ Bit_15 3507 DR 48...
Page 158: Operating Errors, Technology Messages, Data/Command Errors
Scale parameters and functions 8.30 DR 34 ASCII weight display 8.29.2 Operating errors, technology messages, data/command errors All available message bits are presented in the table above. For data/command errors, there is also "Additional information" available, which is described in more detail in section Errors and messages (Page 171).
Page 159: Dr 35 Securedisplay Data
Scale parameters and functions 8.31 DR 35 SecureDisplay data Restriction code (via command 801 for 5 seconds) From DR 3 Set point (via command 721 for 5 seconds) From DR 20 Total set point (via command 722 for 5 seconds) From DR 21 Totalizer 1 (via command 771 for 5 seconds) From DR 30...
Page 160: Dr 38 Max Pointer
Scale parameters and functions 8.33 DR 39 Statistics 8.32 DR 38 Max pointer Data record 38 provides a non-volatile max pointer (drag indicator) of the gross weight (filtered by filter F1) that indicates the maximum weight that has occurred since commissioning or since a reset of the max pointer.
Page 161 Scale parameters and functions 8.33 DR 39 Statistics In DR 22 you can make additional settings regarding the collection of statistical data. Table 8-34 Assignment of data record 39 Variable Note Type Length Rw Default Min. Max. Modbus regis‐ ters (bytes) Data record number Contains no.
Page 162 Scale parameters and functions 8.33 DR 39 Statistics Variable Note Type Length Rw Default Min. Max. Modbus regis‐ ters (bytes) No. of checks class Number of checked FLOAT 4091 TH1 (% of no. of weighings above weighings) TH1 relative [%] in reference to the num‐...
Page 163 Scale parameters and functions 8.33 DR 39 Statistics Variable Note Type Length Rw Default Min. Max. Modbus regis‐ ters (bytes) No. of checks class Number of checked FLOAT 4099 "bad" (% of no. of weighings outside tol‐ weighings) erance band 2 rela‐ tive [%] in reference to the number of "To‐...
Page 164: Dr 41/42 Data Memory
Scale parameters and functions 8.35 DR 45 Protocol request 8.34 DR 41/42 Data memory Data records 41 and 42 each provide 64 bytes of data that can be used as needed. For example, they can be used to implement connections between the Modbus interfaces and a SIMATIC S7-1200.
Page 165: Protocol Id To Be Read
Scale parameters and functions 8.35 DR 45 Protocol request sends DR 45 to the SIWAREX. The log is then made available in DR 46 for reading. Command 891 is used for the calibratable display of logs by the calibratable "SecureDisplay" software. Table 8-37 Assignment of data record 45 Variable...
Page 166: Dr 46 Protocol Content
Scale parameters and functions 8.36 DR 46 Protocol content 8.36 DR 46 Protocol content 8.36.1 Overview Log data is provided in data record DR 46. The log memory of SIWAREX WP251 can hold up to 550,000 entries. Note Depending on the operating mode, the protocols have different structures. The factory settings are loaded after a change of the operating mode (DR 3).
Page 167: Oldest Report Id
Scale parameters and functions 8.36 DR 46 Protocol content Variable Note Type Rw Default Min. Max. Mod‐ bus reg‐ (byt isters String header for String header UBYTE[ 28,28 4347 protocol ID current‐ ly selected Protocol Log content CHAR[4 " " 4348 (Page 168) String header for...
Page 168: Protocol
Scale parameters and functions 8.36 DR 46 Protocol content 8.36.5 Protocol The 46 bytes of the log have the following structure in the NAWI, ACI and AWI modes of operation: Designation Data type Length Gross/Net UBYTE SEMICOLON UBYTE G/N weight calibratable UBYTE SEMICOLON UBYTE...
Page 169: Dr 47 Logbook
Scale parameters and functions 8.37 DR 47 Logbook 8.37 DR 47 Logbook The changes in the SecureDisplay software versions are recorded in the logbook. If the SIWAREX has established communication with the SecureDisplay, SIWAREX checks whether the software version of the SecureDisplay has changed. Changes are recorded in the logbook. In this way, a more recent version of the SecureDisplay can also be used during operation requiring calibration without the calibration being violated.
Page 170: Dr 48 Date And Time 2 (For Modbus)
Scale parameters and functions 8.38 DR 48 date and time 2 (for Modbus) Comments Type Default Min. Max. Mod‐ (byt register FW version new New FW version, e.g. CHAR[1 " " 4421 V1.01.04 Checksum Checksum of logbook entry USH‐ 4426 Reserve Reserve USH‐...
Page 171: Errors And Messages
Errors and messages Message and error types Three types are distinguished: Operating errors Operating errors can occur spontaneously at any time due to an unforeseen event. They include internal and external hardware problems which can occur spontaneously during weighing, e.g. wire break of the load cell cable. Data and operating errors Data and command errors arise always as response to a command or a data record transfer.
Page 172: Evaluating Errors/Messages With The Help Of Siwatool
Errors and messages 9.6 Operating errors Evaluating errors/messages with the help of SIWATOOL The electronic weighing system has a message buffer that stores the last 80 entries including time stamp in non-volatile memory. If the number of messages in the message buffer exceeds 80, the oldest entry is overwritten.
Page 173: Technology Messages
Errors and messages 9.6 Operating errors Operating errors Error Description and remedy code Reserve Re‐ Reserve serve 1006 Logbook error 1006 Error when writing/clearing the logbook. Remedy: Load factory settings. Con‐ tact SIWAREX Support if the error recurs. 1007 Application error 1007 Incompatible FW was loaded.
Page 174 Errors and messages 9.6 Operating errors Technology errors Error code Description and remedy 2003 Initial zero setting on not 2003 The weight at switch-on is outside the configured value possible range in DR 3 defined by the maximum positive and negative weight for initial zero setting.
Page 175: Data And Command Errors
Errors and messages 9.6 Operating errors Technology errors Error code Description and remedy 2113 Maximum emptying time 2113 The maximum emptying time configured in DR 25 was exceeded exceeded during emptying. Remedy: Check the scale mechanics (for possible soiling). Adjust the maximum emptying time in DR 25, if necessary.
Page 176 Errors and messages 9.6 Operating errors Data and command errors Error code Additional Description string 4502 , because module is already waiting for standstill 4507 , because dosing active 4514 , because CPU is missing or not ready 4541 , because emptying active 4680 , because SecureDisplay is missing or not visible 4681...
Page 177 Errors and messages 9.6 Operating errors Data and command errors Error code Additional Description string 4509 , because timing within dosing step sequence is impermissible 4513 , because service mode is activated 4515 , because not possible in this operating mode 4539 , because total set point has already been reached 4540...
Page 178 Errors and messages 9.6 Operating errors Data and command errors Error code Additional Description string 7053 Error in calibration pa‐ 7053 Additional information indicates an implausible parameter in DR 3 rameter DR 3 Parame‐ Parameter ID of the affected parameter in DR 3 ter ID 4510 , because service mode is not active...
Page 179 Errors and messages 9.6 Operating errors Data and command errors Error code Additional Description string 4510 , because service mode is not active 7059 Error in interface pa‐ 7059 Additional information indicates an implausible parameter in DR 12 rameters DR 12 - DR 14 - DR 14 Parame‐...
Page 180: Data And Command Errors - Additional Information
Errors and messages 9.6 Operating errors Data and command errors Error code Additional Description string Reserve 7067 Parameter error DR 28 7067 Additional information indicates an implausible parameter in DR 28 Parame‐ Parameter ID of the affected parameter in DR 28 ter ID Reserve Reserve...
Page 181 Errors and messages 9.6 Operating errors Parameter Data record Parameter ID Gross indicator 3199 Maximum weight 3217 Minimum weight 3219 Order no. low pass filter 1 3236 Automatic zero tracking in dosing cycle 3247 Resolution 3248 Restriction code 3249 Scale name 3256 Additive tare 3282...
Page 182 Errors and messages 9.6 Operating errors Parameter Data record Parameter ID Assignment digital Input DI.3 3058 Assignment digital output DQ.0 3059 Assignment digital output DQ.1 3060 Assignment digital output DQ.2 3061 Assignment digital output DQ.3 3062 State of digital output DQ.0 on error or CPU-Stop 3140 State of digital output DQ.1 on error or CPU-Stop 3141...
Page 183 Errors and messages 9.6 Operating errors Parameter Data record Parameter ID Preset DQ.0 3128 Preset DQ.1 3129 Preset DQ.2 3130 Preset DQ.3 3131 Transition Step 0 3978 Transition Step 1 3979 Transition Step 2 3980 Transition Step 3 3981 Transition Step 4 3982 Transition Step 5 3983...
Page 184: Messages By Leds On The Module
Errors and messages 9.6 Operating errors Parameter Data record Parameter ID Emptying time Maximum single set point 1341 Maximum emptying time 1354 Cycle time for automatic zero setting 2259 Weighing start options 4098 Minimum automatic tare weight 2281 "Fine" set value for analogue output 2461 "Coarse"...
Page 185 Errors and messages 9.6 Operating errors Item Color Labeling Function LED 19 Load cell(s) OK Load cell(s) faulty LED 10 Not used LED 11 Not used LED 12 Not used LED 13 Not used LED 14 Not used LED 15 Not used LED 16 Analog output active...
Page 186 Errors and messages 9.6 Operating errors SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 187: Command Lists
Command lists 10.1 Overview The commands for the electronic weighing system described here can be transmitted by several interfaces: ● by the Operator Panel via the controller to the SIWAREX module ● by the operator panel directly to the SIWAREX module via Modbus ●...
Page 188 Command lists 10.2 Command lists A data or command error is signaled if a command cannot be executed or if the sent data record is rejected. Table 10-1 Service commands Com‐ Command Description Protec‐ mand code Service mode ON Turn on service mode Service mode OFF Turn off service mode Weight Simulation on...
Page 189 Command lists 10.2 Command lists Com‐ Command Description Protec‐ mand code Check Calibration The command calculates the theoretical digital values in relation to the cal‐ ibration weights using the load cell parameters from DR 10 and the adjust‐ ment weights 0, 1 and 2 from data record 3. The output of these theoretical digits is made in DR 4.
Page 190 Command lists 10.2 Command lists Table 10-5 Display changeover for DR 34 and SecureDisplay Command Command Description Protected code High resolution on Activate high resolution (factor 10) of the weight value on the main display (DR 34) and the SecureDisplay for 5 s.
Page 191 Command lists 10.2 Command lists Command Command Description Protected code Display serial number Display serial number of SIWAREX WP251 in the main display and the SecureDisplay for 5 seconds. Display Firmware Version Display firmware version and checksums of SIWAREX WP251 in the main display (serial number only) and the SecureDisplay for 5 seconds.
Page 192 Command lists 10.2 Command lists 1103 Start continuous Starts n dosing cycles in continuous succession Continuous operation ends mode automatically if a total set point (DR 21) was specified and reached or al‐ ternatively using the "Stop continuous mode (1123)" command. If a dosing cycle is still active, it is completed.
Page 193: Command Groups Of The Siwarex Wp251
Command lists 10.3 Command groups of the SIWAREX WP251 10.3 Command groups of the SIWAREX WP251 The following commands can be triggered in the scale data block DB_SCALE in the area CMD1 to CMD3: Table 10-8 Command groups of the SIWAREX WP251 Command code Description 1 ...
Page 194 Command lists 10.3 Command groups of the SIWAREX WP251 SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 195: Communication With Simatic S7-1200
The function block described above including HMI configuring can be downloaded as a ready- made example project (https://support.industry.siemens.com/cs/ww/de/ps/17796) ("Ready- for-use") from the Siemens Industry Online Support. The latest firmware version for the weighing modules can be downloaded at: Firmware update (https://support.industry.siemens.com/cs/ww/de/ps/17796)
Page 196 Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 For TIA Portal V13 SP1, an HSP can be downloaded for the integration. Figure 11-1 Configuring in the TIA Portal The module can be positioned directly next to the S7-1200 CPU using drag and drop. Figure 11-2 Configuring with S7 TIA Portal automatically assigns a separate I/O start address and a HW ID for every SIWAREX...
Page 197: Calling Of Function Block
Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 Figure 11-3 Start address of the module Figure 11-4 Hardware identifier Diagnostic interrupts can be optionally enabled or deactivated in the module properties. 11.1.4 Calling of function block This description is based on use of the "WP251" block with data record communication and the following data: ●...
Page 198: Working With The Function Block
Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 The function block can be integrated at the desired position in the user program using drag and drop. Calling of the FB must be carried out cyclically in the control program. Figure 11-5 Block WP251PR Function block parameter...
Page 199 Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 Reading and writing of data records is carried out using special command codes which can be sent with three command mailboxes handled according to priority within the instance DB: Figure 11-6 CMD command mailboxes As shown in the graphics, a command mailbox always consists of a command code (Int) and four bits (Bool).
Page 200 Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 Example The following example clarifies the actions with command mailboxes and data records: "Calibration weight 1" is to be set to a value of 12.5 from the CPU. Since "Calibration weight 1"...
Page 201: I/O Interface Of Function Block
Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 11.1.6 I/O interface of function block The instance data block of the function block provides the "s_IO_DATA" structure. All parameters in this structure are updated cyclically by WP251 to SIMATIC. Thus, all values within the structure can be used directly –...
Page 202: Error Codes Of Function Block
Communication with SIMATIC S7-1200 11.1 Integration in SIMATIC S7-1200 Parameter (read) Meaning TECHNOLOGICAL_ER‐ Technology error word 1 according to the "Messages" section RORS_1 TECHNOLOGICAL_ER‐ Technology error word 2 according to the "Messages" section RORS_2 DATA_CMD_ERRORS_1 Data/command error word 1 according to the "Messages" section DATA_CMD_ERRORS_2 Data/command error word 2 according to the "Messages"...
Page 203: Communication Via Modbus
Communication with SIMATIC S7-1200 11.2 Communication via Modbus 11.2 Communication via Modbus 11.2.1 Introduction The current process values and parameters can be exchanged via the RS485 interface with Modbus RTU or the Ethernet interface with Modbus TCP/IP. It is possible to use both interfaces for the communication.
Page 204: Data Record Concept
Communication with SIMATIC S7-1200 11.2 Communication via Modbus ● 57 600 bit/s ● 115 000 bit/s Functions which can be used by the master are listed below. The structure and contents of the registers are shown in chapter "Scale parameters and functions (Page 55)". Service Function code Usage...
Page 205: Reading Registers
Communication with SIMATIC S7-1200 11.2 Communication via Modbus Table 11-5 Command mailbox 3: Low priority Variable Note Type Modbus registers CMD3_CODE Code of command to be executed USHORT CMD3_TRIGGER Trigger for starting the command USHORT CMD3_STATUS 0=job running; 1=job finished (1 cycle) USHORT CMD3_QUIT 0=no error;...
Page 206 You can find all further command numbers in chapter → Command lists (Page 187). In addition, an online document is available for working with SIWAREX WP251 and Modbus → Modbus communication of WP251 (http://support.automation.siemens.com). SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 207: Operation Requiring Official Calibration
The SIWAREX SecureDisplay software serves as the legal trade main display of the scale. The software must be installed on the HMI prior to the verification. You can find a complete description of the software installation in the "SIWAREX SecureDisplay" information in Siemens Industry Online Support at https:// support.industry.siemens.com/cs/ww/en/view/109477602 (https:// support.industry.siemens.com/cs/ww/de/view/109477602).
Page 208: Parameterization Of The Scale
Operation requiring official calibration 12.2 Verification 12.1.4 Parameterization of the scale The scale is parameterized prior to the verification in accordance with the envisaged use. The scale is checked and sealed during the verification. The parameters relevant to the verification cannot be changed after the verification.
Page 209 Operation requiring official calibration 12.2 Verification In turn, the "Calibration check" submenu branches into three submenus with the contents as shown in the following table. "Version and variables check" submenu Switch over the representation of the SecureDisplay Display or hide the SecureDisplay using command buttons Switch over between 5 possible displays of variables using buttons 1 to 5 Show smallest possible display using command button.
Page 210: Checking Of Parameters Relevant To The Device
Operation requiring official calibration 12.2 Verification 12.2.2 Checking of parameters relevant to the device The following parameters relevant to the device are checked during the verification: 1. Checking of the software ID of the SecureDisplay The software ID of the DisplayCali.exe function must agree with the requirements in the SIWAREX SecureDisplay test certificate (EC).
Page 211 Operation requiring official calibration 12.2 Verification 4. Check of the logbook entries Only the software downloads for the legal trade display SecureDisplay are retained in the logbook. It is no longer possible to download the firmware for the SIWAREX WP251 evaluation electronics following verification of the scale with the jumper for write protection inserted.
Page 212 The telegram address (No. 01) must be set on the Siebert display S102. Checking is carried out in accordance with the specifications in the Instruction Manual "Siebert series S102 - digital displays for Siemens Siwarex". SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 213: Technical Specifications
Technical specifications 24 V power supply Note A protective extra-low voltage (to EN 60204‑1) is to be ensured by system power supply. Rated voltage 24 V DC Static low / high limits 19.2 V DC / 28.8 V DC Dynamic low / high limits 18.5 V DC / 30.2 V DC Non-periodic overvoltages 35 V DC for 500 ms with a recovery time of 50 s...
Page 214: Analog Output
Technical specifications Min. DMS input resistance 40 Ω ● Without Ex-i interface SIWAREX IS 50 Ω ● With Ex-i interface SIWAREX IS min. DMS output resistance 4100 Ω Temperature coefficient range ≤ ± 5 ppm/K v. E. Temperature coefficient zero point ≤...
Page 215 Technical specifications Digital outputs (DQ) The set value is output at the digital output in case of a fault or SIMATIC CPU stop. A freewheeling diode has to be installed at the consumer with inductive loads at the digital output. Quantity 4 (high-side switch) Supply voltage range...
Page 216: Dimensions And Weights
Technical specifications Terminating resistors (can be activated) 390 Ω / 220 Ω / 390 Ω Electrical isolation 500 V AC Transfer protocol ASCII for remote display from Siebert and Mod‐ bus RTU) Cable length ≤ 115 kbps max. 1 000 m (fieldbus cable 2-wire, shielded, e.g.
Page 217: Electrical, Emc And Climatic Requirements
Technical specifications 13.1 Electrical, EMC and climatic requirements 13.1 Electrical, EMC and climatic requirements Electrical protection and safety requirements Fulfilled requirement Standards Comments Safety regulations IEC 61010-1 IEC 61131-2; UL 508 CSA C22.2 No.142 Protection class IEC 61140 Module is operated with protective extra- low voltage.
Page 218: Electromagnetic Compatibility
Technical specifications 13.1 Electrical, EMC and climatic requirements Electromagnetic compatibility Table 13-1 Requirements: Interference emission in industrial area in accordance with EN 61000‑6‑4 Comments Standard Limits Emission of radio interferen‐ Class A industrial environ‐ ● 30 ... 230 MHz, 40 dB (μV/m) Q ces (electromagnetic fields) ment: ●...
Page 219: Ambient Conditions
Technical specifications 13.1 Electrical, EMC and climatic requirements Comments Standard Severity class HF irradiation amplitude IEC61000-4-3 ● 80 ... 2000 MHz: 12 V/m modulated NAMUR NE21 ● Mod.: 80% AM with 1 kHz OIML R76 Note: EN 45501*3 In the ranges 87 ... 108 MHz, 174 ...
Page 220: Approvals
For applications in hazardous areas, read the safety information in the document "Product information "Use of SIWAREX modules in a Zone 2 Hazardous Area". (https:// support.industry.siemens.com/cs/?lc=en-DE)"! Note The current approvals for your device can be found on the nameplate. → CE approvals →...
Page 221 13.2 Approvals → KCC approval → EAC approval → RCM approval → The modules are RoHS-compliant according to EU Directive 2016/65/EU → EC type examination certificates The approvals are available online at https://support.industry.siemens.com/cs/ww/en/ps/ 7MH4960-6AA01 (https://support.industry.siemens.com/cs/ww/de/ps/7MH4960-6AA01). SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 222 Technical specifications 13.2 Approvals SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 223: Accessory
Accessory Ordering data Description Order number SIWATOOL V4 & V7 7MH4900-1AK01 ● Optional service and commissioning software SIWATOOL V4 and V7 SIWAREX WP2xx calibration set 7MH4960-0AY10 ● SecureDisplay manual ● Calibration plate for covering the connection terminals ● Inscription foil for ID labels ●...
Page 224 Accessory Ordering data Description Order number 7MH4 710-5BA ● With short-circuit current < 199 mA DC 7MH4 710-5CA ● With short-circuit current < 137 mA DC Cable (optional) Cable Li2Y 1 x 2 x 0.75 ST + 2 x (2 x 0.34 ST) - CY 7MH4 702-8AG ●...
Page 225: Appendix
In addition to our documentation, Siemens provides a comprehensive support solution at: ● Service&Support (http://www.siemens.com/automation/service&support) Personal contact If you have additional questions about the device, please contact your Siemens personal contact at: ● Partner (http://www.automation.siemens.com/partner) In order to find the contact for your product, select under 'All Products and Branches' the path 'Automation Technology >...
Page 226 Appendix A.1 Technical support SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 227: Esd Guidelines
ESD guidelines ESD Guidelines Definition of ESD All electronic modules are equipped with large-scale integrated ICs or components. Due to their design, these electronic elements are highly sensitive to overvoltage, and thus to any electrostatic discharge. The electrostatic sensitive components/modules are commonly referred to as ESD devices. This is also the international abbreviation for such devices.
Page 228 ESD guidelines B.1 ESD Guidelines Figure B-1 Electrostatic voltages which an operator can be subjected to Basic protective measures against electrostatic discharge ● Ensure good equipotential bonding: When handling electrostatic sensitive devices, ensure that your body, the workplace and packaging are grounded. This prevents electrostatic charge. ●...
Page 229: List Of Abbreviations
List of abbreviations List of abbreviations ASCII American Standard Code for Information Interchange Gross weight Central processor, in this case SIMATIC CPU Data block SIMATIC S7 function block Human machine interface (e.g. SIMATIC Operator Panel) Hardware Support Package Hardware NAWI Non-automatic weighing instrument nicht selbsttätige Waage OIML...
Page 230 List of abbreviations C.1 List of abbreviations SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...
Page 231: Index
Index Abbreviations, 229 History, 13 Application, 19 Hotline, 225 Approvals, 220 Installation, 27 Calibration, 46 Installation guideline, 25 Calibration parameters, 61 Internet, 225 Calibration protection plates, 39 Calibration set, 207 Check of the scale parameters, 208 Command lists, 187 Load cell connections, 31 Commissioning, 41 Connections, 29 Customer Support Hotline, 225...
Page 232 Index Reliability, 220 Safety information, 17 safety requirement, 217 Electrical, 217 Scope of delivery, 14, 223, 224 Service, 225 Shield connection element, 32 SIWATOOL V7, 42 Support, 225 System overview, 19 SIWAREX WP251 Operating Instructions, 11/2018, A5E37203357-AD...

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