Siemens SIWAREX WP321 Operating Instructions Manual
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Siemens SIWAREX WP321 Operating Instructions Manual

Electronic weighing system
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Download this manual See also: Manual
Weighing systems
Electronic weighing system
SIWAREX WP321
Operating Instructions
7MH4138-6AA00-0BA0
08/2019
A5E33715669A-AD
Introduction
Safety notes
Description
Application planning
Mounting
Connecting
Commissioning
Scale parameters and
functions
Messages
Command lists
Communication in SIMATIC
S7-300/400/1200/1500
Technical data
Ordering data
Certificates and support
ESD guidelines
Abbreviations
1
2
3
4
5
6
7
8
9
10
11
12
13
A
B
C

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Summary of Contents for Siemens SIWAREX WP321

  • Page 1 Introduction Safety notes Description Weighing systems Application planning Electronic weighing system SIWAREX WP321 Mounting Connecting Operating Instructions Commissioning Scale parameters and functions Messages Command lists Communication in SIMATIC S7-300/400/1200/1500 Technical data Ordering data Certificates and support 7MH4138-6AA00-0BA0 ESD guidelines Abbreviations...
  • Page 2 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

    5.4.1 Introduction ..........................22 5.4.2 Possible effects of interference ....................23 5.4.3 Coupling mechanisms......................23 5.4.4 Five basic rules for securing EMC ..................23 Mounting on the SIMATIC ET 200SP ..................24 Configuration of the hardware in SIMATIC ................25 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 4 7.3.8 Checking the scale following calibration ................44 Fast commissioning (Quick Start) with SIWATOOL...............45 7.4.1 Service with the SIWATOOL program ...................45 7.4.2 Establish communication to SIWAREX WP321 ..............45 7.4.3 Calibration ..........................46 7.4.3.1 Selecting the calibration method ....................46 7.4.3.2 Calibration with calibration weight..................47 7.4.3.3...
  • Page 5 RS485 protocol ........................81 8.11.2 RS485 baud rate ........................81 8.11.3 RS485 character parity ......................81 8.11.4 Decimal place for Siebert indicator ..................81 8.12 DR 14 SIMATIC interface parameters ...................81 8.12.1 Selection of process value 1, 2 ....................82 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 6 Structure of the program "Ready for use" ................103 11.3 Advantages of task sharing....................103 11.4 Hardware configuration of the electronic weighing system ..........104 11.5 Calling of function block .......................106 11.6 Working with the function block....................107 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 7 Technical data ............................115 12.1 Technical data........................115 12.2 Electrical, EMC and climatic requirements................117 12.3 Reliability..........................120 12.4 Approvals ..........................120 Ordering data............................123 Certificates and support..........................125 Technical support.........................125 ESD guidelines ............................127 ESD Guidelines........................127 Abbreviations............................129 List of abbreviations ......................129 Index.................................131 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 8 Table of contents SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 9: Introduction

    LONG --> DINT CHAR --> STRING See also Connection of Siebert display via RS485 (Page 33) DR 32 Message display (Page 88) Technology error message list (Page 99) Reliability (Page 120) Approvals (Page 120) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 10: 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 constitute one element of such a concept. SIWAREX WP321...

  • Page 11: Transportation And Storage

    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.

  • Page 12: Basic Knowledge Required

    Introduction 1.8 Basic knowledge required Basic knowledge required Knowledge of weighing technology as well as general knowledge of the SIMATIC system including the TIA Portal are necessary in order to understand the manual. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 13: Safety Notes

    The specifications of the manual for the SIMATIC ET 200SP system apply for configuration, installation and commissioning in the SIMATIC environment. This chapter includes additional information on hardware configuration, installation and preparation for operation of the SIWAREX WP321. The safety notes must be observed. Note The device was developed, manufactured, tested and documented in compliance with the relevant safety standards.
  • Page 14 Safety notes 2.1 General safety instructions SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 15: Description

    Description Product overview SIWAREX WP321 is a versatile and flexible weighing module that can be operated as a static weighing instrument. The electronic weighing system can be used in SIMATIC ET 200SP and uses all features of a modern automation system, such as integrated communication, operation and monitoring, the diagnostics system as well as the configuration tools in the TIA Portal or SIMATIC STEP, WinCC flexible and PCS7.

  • Page 16: Customer Benefits

    ● Uniform design technology and consistent communication in SIMATIC ET 200SP ● Parameter assignment by means of an operator panel, STEP7 user program or PC ● Uniform configuration option in the SIMATIC TIA Portal, SIMATIC STEP7 or PCS7 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 17 ● Module replacement is possible without recalibrating the scales ● Use in Ex Zone 2 / ATEX approval ● Intrinsically safe load cell supply for Ex Zone 1 (SIWAREX IS option) ● Diagnostics functions SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 18 Description 3.4 Customer benefits SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 19: Application Planning

    The integration in SIMATIC gives you the option to process the weight value directly in the PLC (ProgrammabelLogic Controller). The SIWAREX WP321 is calibrated at the factory. This allows for automatic calibration of the scale without the need for calibration weights and replacement of modules without the need for recalibrating the scale.

  • Page 20: Parameter Assignment With The Simatic Panel

    You require an RS485/USB converter (see Ordering data (Page 123)). 4.2.2 Parameter assignment with the SIMATIC Panel SIWAREX WP321 parameters can be assigned using a SIMATIC Panel connected to the SIMATIC CPU. The "Ready-for-use" application software is used for this. SIWAREX WP321...

  • Page 21: Mounting

    Safety information for use according to FM and UL If you use the device under FM conditions you must also keep to the following safety notices in addition to the general safety notices for protection against explosion: SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 22: Installation Guideline

    EMC requirements. It ensures safe operation even in harsh environmental conditions. Nevertheless, you should still carry out EMC planning before installing your devices in order to determine any sources of interference and include them in your considerations. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 23: Possible Effects Of Interference

    ● Bond all inactive metal parts to chassis ground, ensuring large area and low-impedance contact (large cross-sections). ● When using screw connections on varnished or anodized metal parts, support contact with special contact washers or remove the protective insulating finish on the points of contact. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 24: Mounting On The Simatic Et 200Sp

    The module is snapped onto the ET 200SP base unit (BU). You must use base units of type A0 (→ Industry Mall (https://mallstage.industry.siemens.com/mall/en/b0/Catalog/Products/ 10229887?tree=CatalogTree)). The load cells, power supply and serial interfaces are connected via the terminal box. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 25: Configuration Of The Hardware In Simatic

    Each SIWAREX electronic weighing system requires 16 bytes of the I/O area. Address assignment is carried out in the TIA Portal or in the SIMATIC Manager during hardware configuration. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 26 Mounting 5.6 Configuration of the hardware in SIMATIC SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 27: Connecting

    Connecting All external connections are made via the terminal box. Figure 6-1 SIWAREX WP321 process terminals on the base unit 24 V connection The 24 V DC supply voltage is connected by means of the corresponding terminals on the base unit.

  • Page 28: Connecting Siwarex Jb To The Electronic Weighing System And Load Cell

    7. Close the cover of the SIWAREX JB according to the tightening torque. 6.2.2 Wiring diagrams 6.2.2.1 Load cells with four-wire system SHIELD SENSE- SENSE- EXC- EXC- SIGNAL- SIGNAL- SENSE+ SENSE+ EXC+ EXC+ SIGNAL+ SIGNAL+ SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 29 Shield of the signal cable connected to shield terminal The following jumpers are set by default: Jumper From terminal To terminal EXC- SENSE- EXC+ SENSE+ Note If the jumpers are missing, the electronic weighing system reports a wire break. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 30: Load Cells With Six-Wire System

    EXC- SIGNAL- SIGNAL- SENSE+ SENSE+ EXC+ EXC+ SIGNAL+ SIGNAL+ Figure 6-5 Shield of load cell cable connected to shield terminal ● Disconnect the following jumpers: Jumper From terminal To terminal EXC- SENSE- EXC+ SENSE+ SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 31: Connecting The Cable

    To avoid interference as a result of these currents, it is imperative to provide a low-impedance connection to the ground. Only use cables equipped with a shielding braid. Shielding density must be at least 80%. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 32: Connection Of Rs485 Serial Interface

    RS485 data cable + RS485: D- RS485 data cable - If a SIWAREX WP321 module is connected to SIWATOOL or a Siebert display, insert wire jumpers between the T+ and D+' terminals and between the T- and D-' terminals. SIWAREX WP321...

  • Page 33: Connection Of Siebert Display Via Rs485

    Address meaning: Address Weight value Weight Total Tare t Timeout e.g. timeout after 2 seconds No decimal point F Segment test No segment test when switching on ----* Segment test when switching on 8.8.8 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 34: Connection Of The Siwarex Db

    SENSE- EXC- SIGNAL- SENSE+ EXC+ SIGNAL+ Figure 6-10 Connect SIWAREX DB to SIWAREX WP electronic weighing system and load cell ① 5. Activate the terminating resistor RS-485 by setting both DIP switches to ON. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 35: Connect The Cable

    Place the cable shield in the EMC cable gland. 2. For plastic cable glands, connect the corresponding wire of the SIWAREX load cell to the shield terminal. 3. Strip the cable ends at least 6 mm. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 36 4. Push the screwdriver into the rectangular opening of the terminals. 5. Insert the stripped cable into the round opening as far as it will go. 6. Remove the screwdriver from the rectangular opening. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 37: Commissioning

    Commissioning tools Commission the electronic weighing system using the following alternatives: ● Touch panel und SIWAREX WP321 function block in S7-300/400/1200 or 1500 A free example project is available for download online at TIA Portal project "Ready-for-use" for SIWAREX WP321 (https://support.industry.siemens.com/cs/ww/en/view/94109373).

  • Page 38: 5-Minute Quick Start With The Operator Panel And The Ready-For-Use Software

    The remaining parameters are factory-set in such a way that they can be used in most cases without any changes. You can download the HMI software used below as free TIA Portal project "Ready-for-use" for SIWAREX WP321 (https://support.industry.siemens.com/cs/ww/en/view/94109373). Figure 7-1 Quick start step 1...

  • Page 39: Factory Setting Of The Parameters

    The quick start is based on the factory setting of the parameters. Therefore, the previous parameter settings must be reset prior to the quick setup. Service mode must be switched on first. Resetting to the factory setting can then be carried out. Figure 7-2 Quick start step 2 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 40: Selecting The Calibration Method

    With both methods, make sure that the mechanical properties of the scale are flawless prior to calibration. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 41: Defining The Calibration Weights

    Note that the interval between the calibration weights must be at least 2% of the nominal load of the scale. With a 1 000 kg scale, a calibration weight of at least 20 kg must therefore be used. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 42: Setting Calibration Points

    Place "Calibration weight 2" defined in step 4 on the scale construction, and execute the "Set calibration weight 2" command. 4. Calibration of the scale is now complete. Return to the start screen by clicking on the house icon. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 43: Calibrating The Scale Automatically

    If the exact characteristic values are unknown, it is permissible to also use rounded-off numbers (e.g. 1.0 mV/V, 2.0 mV/V). The nominal load of an individual load cell (not the nominal load of the complete scale!) must subsequently be defined. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 44: Performing The Automatic Calibration

    3. If a second known reference weight is available, place it on the scale in addition. Check whether the scale displays the sum of the reference weights. 4. Remove the reference weights from the scale. Check that the display is "0 kg" again. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 45: Fast Commissioning (Quick Start) With Siwatool

    The SIWATOOL program is described in the sectionService with the SIWATOOL program (Page 56). You require an RS485-USB converter from Siemens in order to connect the PC to the SIWAREX (see section Ordering data (Page 123)). You can then connect the RS485 interface of the SIWAREX to the USB port of the PC.

  • Page 46: Calibration

    ● Select the COM port of your PC used for the RS485-USB converter (for example: COM3). Figure 7-9 SIWATOOL: Select Com port window ● Click on the "Online" button ⇒ The communication to SIWAREX WP321 is established. 7.4.3 Calibration 7.4.3.1...

  • Page 47: Calibration With Calibration Weight

    ● Send the calibration parameters set on your PC to SIWAREX. ● Select "Service mode on" in the Service menu. The calibration parameter (DR3) can only be sent and the calibration commands executed with service mode switched on. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 48 ● After sending the calibration parameters to SIWAREX, select "Set Calibration Point 0" in the Service menu with an empty scale. Empty scale means only the mechanical dead load (e.g. empty container) rests on the load cells. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 49 7.4 Fast commissioning (Quick Start) with SIWATOOL ● Place the previously defined "Calibration weight 1" on the scale ● Select "Set Calibration Point 1" in the Service menu. ● Select "Service mode off" in the Service menu. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 50: Automatic Calibration (Without Calibration Weight)

    The scale can also be calibrated without a weight. To do this, the parameters marked in bold in DR3 / basic parameters are checked or entered, and the data specific to the load cells are specified in DR10. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 51 If the scale is not empty during automatic calibration, but the material weight on the scale is known (e.g. after conversion to SIWAREX WP321), the known material weight can be specified as calibration weight 0. This means the material weight is taken into account during automatic calibration.
  • Page 52 "1.0" for 1 mV/V load cells, the value "2.0" for 2 mV/V load cells, etc. ③ Specify the Nominal load of one single load cell. Figure 7-18 SIWATOOL load cell parameters (DR10) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 53 ● After sending the calibration parameters to SIWAREX, select "Automatic calibration" in the Service menu with an empty scale. Empty scale means only the mechanical dead load (e.g. empty container) rests on the load cells. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 54 SIWATOOL now has obsolete parameter values. Obsolete calibration parameters are marked in red. The calibration parameter (DR3) must be read back in order once again obtain the calibration digits in the SIWATOOL which are consistent with the SIWAREX. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 55: Receive All Data

    4. Remove the test weights from the scale. 5. Check that the display of the scale is 0 kg again. 7.4.4 Receive all data ● Activate the "Receive all data" function in the "Communication" menu. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 56: Service With The Siwatool Program

    SIWAREX to the USB port of the PC. The SIWATOOL program is included in the configuration package. Install SIWATOOL for commissioning (part of the SIWAREX WP321 configuration package, see section Ordering data (Page 123)) on your PC. 7.5.1 Windows and functions of SIWATOOL ①...

  • Page 57: Offline Parameter Assignment

    SIWATOOL. You can use the "Configure recorder" button to select the data records to be recorded and to set the save parameters. The playback speed can be set using a slider. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 58: Available Help Options

    If several parameters of the data record are to be changed, they are entered consecutively. The data record is subsequently selected in the tree view and sent to the SIWAREX modules using the right mouse button. Parameters are always changed as complete data records, rather than individually. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 59: Scale Parameters And Functions

    Procedure 1. Set the Load cell type parameter to SIWAREX DB in data record DR03. (Not relevant for SIWAREX WP321) 2. Set the RS 485 protocol parameter to SIWAREX DB and the RS 485 baud rate to 115 200 bits/s in data record DR13.

  • Page 60: Dr 2 Command Code

    " " (Page 62) Weight unit Maximum length and actual length of UBYTE[2] 04,04 header string for weight unit (for example, g, kg, t, ...) Unit of Weight unit STRING[4] "kg••" weight (Page 63) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 61 [in % of max. weighing range ] (Page 64) Reserve Reserve REAL 100.0 Maximum Negative range of semi-automatic REAL 100.0 negative zeroing device [in % of max. weighing zeroing limit range] (Page 64) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 62: Scale Name

    Permissible filter depth: 0 … 250 (Page 67) Parameter for calculation of calibration points 8.4.1 Scale name You can select any name, but it may not exceed 12 characters. You can enter any designation. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 63: Unit Of Weight

    If this function is enabled, the scale may eventually read zero after a slow drift even if they are fully loaded. The function can, however, be limited by specifying a maximum and minimum weight for zeroing. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 64: Decimal Places For Process Values

    (standstill time). Standstill monitoring is used in static scale mode (commands: zeroing, taring). The diagram below illustrates how standstill monitoring works. The current weight can only be registered in legal trade applications if standstill is reached. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 65: Standstill Time

    If the standstill waiting time is equal to zero, a command requiring standstill is rejected immediately if there is no standstill. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 66: Low-Pass Filter Limit Frequency

    DR 14. 8.4.16 Low-pass filter number The number of the filter defines the effect of damping. The values 2 and 4 can be set. The higher the selected filter number, the higher the effect. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 67: Mean Value Filter Depth

    ● Transfer data record DR 3 from the scale to SIWATOOL and save the data on a data medium. You must follow the correct calibration sequence with increasing calibration weights. Example Zero point = 0.0 kg (always) equals 326348 digits Calibration weight 1 = 100 kg equals 1324765 digits SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 68 Identical scales can be put into operation immediately. Connect the PC to the new scale and enable the "Send all data records" function in service mode. This transfers the parameters for SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 69 80 kg e.g. 451 367 for calibra‐ tion digits 2 Rated load of the load cell(s) e.g. 100 kg 1 000 000 +10 % Rated weight + approximately e.g. approximately 110 1 090 000 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 70: Automatic Calibration

    Contains no. of data UINT record Length Data record length in‐ UINT formation Application Information about UINT which application the DR belongs to Version identifier Information on the UINT 65635 current data record version SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 71: Calibration Digits 0, 1, 2 (Calculated)

    Contains no. of data re‐ UINT number cord Length Data record length infor‐ UINT mation Application Information about which UINT application the DR be‐ longs to Version identifi‐ Information on the current UINT 65635 data record version SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 72: Effective Tare Weight - From Specification

    "Zero" provided it is within the defined zero setting limits. The current gross weight is saved as the zero weight. The zeroing weight must be within the specified range (usually +3 / ‑1 % of the set zero point). SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 73: Current Zero Tracking Weight

    2: Gross weight, absolute 3: Net weight, absolute Reserve Reserve UINT Limit value 1 ON Switch-on point for Limit 1 REAL maxi‐ maxi‐ (Page 75) number number range range Reserve Reserve TIME maxi‐ number range+ SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 74: Limit Reference

    Limit values relate to Gross weight in % of max. weighing range Net weight in % of max. weighing range Absolute gross weight Absolute net weight The limit value "Empty" always relates to gross weight zero. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 75: Limit Value 1 On, Limit Value 2 On, Limit Value 1 Off, Limit Value 2 Off

    "empty". The values are entered as a percentage of the measuring range. The "Empty" limit always refers to the current gross weight in the scale. The setting, whether absolute or a percentage, also affects the "Empty" limit. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 76: Delay Time For Limits

    Reference V - Release STRING[2] 'V ' B - Test etc. FW version - Version 1. UINT 1st digit FW version - Version 2. UINT 2nd digit FW version - Version 3. UINT 3rd digit SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 77: Dr 10 Load Cell Parameters

    Parameter code 1: 120 Hz (prefera‐ bly with line frequency of 60 Hz) Parameter code 2: 600 Hz for fast measurements Number of sup‐ Number of support points UINT port points (Page 79) Reserve UINT SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 78: Selection Of The Sampling Rate

    For fast measurements, you can select a measuring rate of 600 Hz (parameter code 2) as of firmware V1.2.0. The setting has an effect on the frequency response of the signal path. The following diagrams show the frequency response: SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 79: Number Of Support Points

    Scale parameters and functions 8.10 DR 10 load cell parameters Figure 8-6 Signal behavior SIWAREX WP321: Sampling rate 50 Hz (unfiltered) Figure 8-7 Signal behavior SIWAREX WP321: Sampling rate 600 Hz (unfiltered) 8.10.2 Number of support points If no anchor points are used, the number of support points is equal to the number of load cells.

  • Page 80: Load Cell Characteristic Value

    1: 19 200 bps (Page 81) 2: 38 400 bps 3: 57 600 bps 4:115 200 bps (for SIWAREX DB) RS485 char‐ Character parity acter parity 0: even (for SIWAREX DB) (Page 81) 1: Odd Bit 1 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 81: Rs485 Protocol

    DR 14. It is possible to define the process values to be output on the basis of the I/O area. Procedure ● Check the parameters and modify them as required ● Transfer the data record to the scale SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 82: Selection Of Process Value 1, 2

    Selection table for process value 1,2 Process value Decimal code From DR Format No process selected Gross process (after low-pass filter 1) 1 REAL Net process (after low-pass filter 1) REAL Tare process REAL SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 83: Dr 15 Manual Tare Specification

    65635 tifier on the cur‐ rent data re‐ cord version Specification Tare specifi‐ REAL Depends on of tare cation memo‐ specification weight ry (manual in DR 3 (Page 84) tare value) Reserve Reserve REAL SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 84: Specification Of Tare Weight

    Set if module is waiting for standstill standstill to execute command Standstill Set if standstill condition is met BIT Reserve Empty Set if "Empty" condition is met BIT Limit value 1 Limit value 1 has responded SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 85 (x 10) (Page 86) Refresh coun‐ Cycle counter incremented by UINT ter for process 1 if weight values have been values changed (Page 87) Operating Total operating time of the UINT time (hours) module (hours) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 86: Gross Process Weight

    DR 3 x 10. 8.14.6 Tare weight The current tare weight (scale interval from DR 3). The resolution corresponds to the scale interval specified in data record DR 3. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 87: Refresh Counter For Process Values

    Refresh counter incremented by 1 UINT counter for if weight values have been process val‐ changed (Page 88) Reserve 2 REAL 8.15.1 Unfiltered digit value The unfiltered digit value is the internal measured value immediately before filtering. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 88: Filtered Digit Value

    1002 RAM error 1102 ADC error 1005 Hardware interrupt lost 1003 Checksum error data Reserve 1004 Checksum error program Reserve 1001 RESET / restart following error (watch‐ dog) 1110 No communication with SIWAREX DB SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 89 Specifications of string lengths not plau‐ sible Reserve Reserve 7006 Command only possible in test field 7007 The calibration weights or calibration dig‐ its are not plausible 7008 Zeroing/zero setting or tare parameter not plausible SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 90: Error Bytes 0 To 7

    Maximum length and actual length UBYTE[2] 16,2 string header of string Content of For display of the weight value and STRING[16] " " main display other current values (see below) as ACII string (Page 91) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 91: Content Of Main Display As Acii String

    Contains no. of data record USHORT Length [DR_LEN] Data record length information USHORT Application [APPL_ID] Information on which applica‐ USHORT tion the data record belongs to Version identifier Information on the current data USHORT 65635 [DR_VERSION] record version SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 92: Dr 80 Siwarex Db Process Status

    Table 8-16 Assignment of data record DR 80 Variable Note Type Length Default Min. Max. (bytes) Data record number Contains no. of data record USHORT [DR_NO] Length [DR_LEN] Data record length infor‐ USHORT mation SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 93 Load cell input 2: Status Bit 0: QI flag USHORT Bit 1: Underload Bit 2: Overload Bit 3: SEN error Bit 4: Impedance error Bit 5: EXC short circuit Bit 6: Power supply failure SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 94 Current percentual load of FLOAT -200 the load cell in relation to the rated load of the load cell Load cell input 4: Signal volt‐ Currently measured load Float -200 age SIG (mV) cell signal SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 95: Dr 81 Siwarex Db Process Status Advanced

    AGE] Load cell input 2: Sense FLOAT 10000 voltage SEN (V) Load cell input 3: Sense FLOAT 10000 voltage SEN (V) Load cell input 4: Sense FLOAT 10000 voltage SEN (V) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 96: Dr 82 Siwarex Db Device Information

    SIWAREX DB FW version number FW version number CHAR[16] „ „ [FW_VERSION] SIWAREX DB HW version HW version CHAR[16] „ „ [HW_VERSION] SIWAREX DB Hardware device ID Hardware device ID USHORT [HW_DEVICE_ID] SIWAREX DB SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 97: Messages

    ● Output of the message buffer to the SIWATOOL program (takes place automatically) ● Output by means of function block as bit field in Scale data block ● Certain operating errors can be transmitted as diagnostic interrupts to the SIMATIC CPU and evaluated by OB82 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 98: Evaluating Messages With The Help Of Siwatool

    All messages of the electronic weighing system can be completely detected and processed in the SIMATIC controller with the help of the SIWAREX WP321 function block (FB). The messages can be evaluated directly in a signaling system by means of a bit signaling area in the scale data block.

  • Page 99: Technology Error Message List

    5105 Load cell parameters not plausible 5105 Load cell parameters in data record DR 10(a) or data record DR 11(d) not plausible (number, supporting points, load spec‐ ifications, etc.). SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 100: Messages By Leds On The Module

    Not used Weighing range exceeded Not used Green Load cell(s) ready for operation (LED off = load cells faulty) Not used yellow Rx/Tx EIA-RS485 communication active Not used Green Status of local 24 V supply SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 101: Command Lists

    4. The function can be used to check the plau‐ sibility of adjustment digits in data record 3, which have been determined in a legal-for-trade calibration. 700 … 899 HMI display switching SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 102 The following commands can be triggered in the scale data block SCALE_DB in the area CMD1 to CMD3: Table 10-1 Command groups of the SIWAREX WP321 Command group Description 1 ... 99 Commands are forwarded from the FB_SIWA via data record DR 2 to the module (scale commands, weighing commands, log commands).

  • Page 103: Communication In Simatic S7-300/400/1200/1500

    Communication in SIMATIC S7-300/400/1200/1500 11.1 General information A SIWAREX WP321 occupies 16 bytes each in the I/O areas of the CPU. Communication between SIWAREX and SIMATIC CPU is supported by the FB. Table 11-1 Memory requirements of the function block...

  • Page 104: Hardware Configuration Of The Electronic Weighing System

    ● Address in I/O area ● Diagnostics interrupts ● Hardware interrupts ● I&M (Identification & Maintenance) data The electronic weighing system occupies 16 bytes in the input/output area. Figure 11-1 Hardware configuration in the TIA Portal SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 105 SIMATIC CPU used (S7-300, S7-400, S7-1200 or S7-1500) → Diagnostics interrupts (Page 111) and Hardware interrupts (Page 112) Figure 11-3 Configuration of interrupts in TIA Portal Figure 11-4 HW ID of the electronic weighing system in TIA Portal (up to TIA Portal V14) SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 106: Calling Of Function Block

    ● Start address SIWAREX WP321: 1 (see → Hardware configuration of the electronic weighing system (Page 104)) ● HW ID SIWAREX WP321: 280 (see → Hardware configuration of the electronic weighing system (Page 104)) ● Instance data block number of SIWAREX WP321 function block: DB321 The function block can be integrated at the desired position in the user program using drag and drop.

  • Page 107: Working With The Function Block

    → Scale parameters and functions (Page 59). Reading and writing of data records is performed using special command codes which can be sent with three command mailboxes handled according to priority within the instance DB: SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 108 A summary of all existing command codes can be found in chapter →Command lists (Page 101). The following equation for generation of a corresponding command code applies to the reading of data records from the SIWAREX to the data block: SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 109 The new calibration weight is now present in the SIWAREX and can be used. Service mode for the module should subsequently be switched off again using the command "2". This procedure for reading and writing data records or parameters is identical for all data records. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 110: I/O Interface Of Function Block

    An invalid hardware ID was created at the function block call ("HW_ID" input). Note If execution of the function block is faulty, the variables shown do not correspond to the actual status in the module. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 111: Diagnostics Messages

    OB82. Contrary to the S7-1200 and S7-1500, the CPUs of the S7-300 and S7-400 systems enter the stop status following a diagnostics interrupt if the OB82 is not loaded. Detailed information can be obtained using the "RALRM" instruction (read interrupt status). SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 112: Hardware Interrupts

    Table 11-5 Table of event bits Hardware interrupt Event type bit Limit 1 OFF → ON 0 Limit 1 ON → OFF 1 Limit 2 OFF → ON 2 Limit 2 ON → OFF 3 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 113 Communication in SIMATIC S7-300/400/1200/1500 11.11 Hardware interrupts Figure 11-8 Configuration of hardware interrupts for S7-1500 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 114 Communication in SIMATIC S7-300/400/1200/1500 11.11 Hardware interrupts SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 115: Technical Data

    ± 4 mV/V Common mode voltage range 0.25 to 4.75 V DMS supply 4.85 V DC ±2 % Short-circuit and overload protection Connection 6-wire Sensor voltage monitoring ≤ 4 V min. DMS input resistance SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 116 See section: Connection of the SIWAREX DB (Page 34) Cable length ≤ 115 kbps max. 1 000 m (fieldbus cable 2-wire, shielded, e.g. 6XV1830-0EH10) Dimensions and weights Dimensions 15 mm ● Width 31 g ● Weight, approx. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 117: Electrical, Emc And Climatic Requirements

    IP rating IP 20 to IEC 60529 ● Protection against contact with standard probe ● Protection against solid bodies with diameters greater than 12.5 mm ● No special protection against water SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 118 EN 45501 Surge on power supply cables EN 61000-4-5 ● 1 kV symmetric IEC 61131-2 ● 2 kV asymmetric NAMUR NE21 ● 1.2/50 µs (8/20) µs pos./neg. EN 61326 ● Internal generator resistance: 2 Ω SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 119 This is a device of class A. The device may cause radio interference in residential areas. Implement appropriate measures (e.g.: use in 8MC cabinets) to prevent radio interference. Ambient conditions The use of SIWAREX WP321 is intended under the following conditions in SIMATIC ET 200SP. Table 12-3 Operating conditions to IEC 60721...

  • Page 120: Reliability

    Mean Time Between Failure (MTBF) The MTBF calculation results in the following value: Table 12-5 MTBF Electronic Weighing System MTBF in years SIWAREX WP321 1495 years @TA = 40 °C 12.4 Approvals NOTICE Safety guidelines for applications in hazardous areas For applications in hazardous areas, read the safety instructions in the document "Product...
  • Page 121 → ATEX certificate (https://support.industry.siemens.com/cs/de/de/ view/22750040/en) → IECEx certificate (https:// support.industry.siemens.com/cs/ww/de/view/109476230/en) → EAC certificate (https://support.industry.siemens.com/cs/ww/de/ view/109476219/en) → Tick mark for Australia and New Zealand → KCC approval → The modules are RoHS-compliant according to EU Directive 2016/65/EU SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 122 Technical data 12.4 Approvals SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 123: Ordering Data

    (https://mallstage.industry.siemens.com/mall/ en/b0/Catalog/Products/10229887?tree=CatalogTree) The following accessories are not included in the scope of delivery: ● Digital remote display The digital remote displays can be connected directly to the SIWAREX WP321 through the RS485 interface. Suitable remote display: S102 Siebert Industrieelektronik GmbH...
  • Page 124 Ordering data SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 125: Certificates And Support

    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) To find the personal contact for your product, go to "All Products and Branches" and select "Products &...
  • Page 126 Certificates and support A.1 Technical support SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 127: Esd Guidelines

    Anyone who is not connected to the electrical potential of their surroundings can be electrostatically charged. The figure below shows the maximum electrostatic voltage which may build up on a person coming into contact with the materials indicated. These values correspond to IEC 801-2 specifications. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 128 In this way, the discharged energy can not affect the sensitive devices. Discharge your body before you start taking any measurements on a module. Do so by touching grounded metallic parts. Always use grounded measuring instruments. SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 129: Abbreviations

    Preset tare (predefined tare weight with manual taring) Random access memory Programmable logic controller STEP 7 Programming device software for SIMATIC S7 Tare weight Technology module Touch Panel (SIMATIC) Universal Data Type (S7) Write protection Load cell(s) Numerical range SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 130 Abbreviations C.1 List of abbreviations SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

  • Page 131: Index

    Technical support, 125 Partner, 125 Personal contact, 125 Guidelines ESD guidelines, 127 Warranty, 11 History, 9 Hotline, (Refer to Support request) Instructions and manuals, 125 Manuals, 125 MTBF, 120 Operating Instructions, 125 Reliability, 120 SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...
  • Page 132 Index SIWAREX WP321 Operating Instructions, 08/2019, A5E33715669A-AD...

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