Vega VEGAFLEX 81 Operating Instructions Manual
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Vega VEGAFLEX 81 Operating Instructions Manual

Tdr sensor for continuous level and interface measurement of liquids, modbus and levelmaster protocol, converter version in second chamber, rod and cable probe
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Operating Instructions
TDR sensor for continuous level and
interface measurement of liquids
VEGAFLEX 81
Modbus and Levelmaster protocol
Converter version in second chamber
Rod and cable probe
Document ID: 41828

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Summary of Contents for Vega VEGAFLEX 81

  • Page 1 Operating Instructions TDR sensor for continuous level and interface measurement of liquids VEGAFLEX 81 Modbus and Levelmaster protocol Converter version in second chamber Rod and cable probe Document ID: 41828...

  • Page 2: Table Of Contents

    Set instrument address ....................53 Set up with the quick setup ..................... 54 Saving the parameterisation data ................... 56 Diagnostics and servicing ....................57 Maintenance ........................57 Diagnosis memory ......................57 Status messages ......................58 VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 3 10.8 Industrial property rights ....................97 10.9 Trademark ........................97 Safety instructions for Ex areas Take note of the Ex specific safety instructions for Ex applications. These instructions are attached as documents to each instrument with Ex approval and are part of the operating instructions. Editing status: 2018-11-05 VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 4: About This Document

    Symbols used Document ID This symbol on the front page of this instruction refers to the Docu- ment ID. By entering the Document ID on www.vega.com you will reach the document download. Information, tip, note This symbol indicates helpful additional information.

  • Page 5: For Your Safety

    During work on and with the device, the required personal protective equipment must always be worn. Appropriate use VEGAFLEX 81 is a sensor for continuous level measurement. You can find detailed information about the area of application in chapter "Product description". Operational reliability is ensured only if the instrument is properly used according to the specifications in the operating instructions manual as well as possible supplementary instructions.

  • Page 6: Eu Conformity

    That is why we have introduced an environment management system with the goal of continuously improving company environmental pro- tection. The environment management system is certified according to DIN EN ISO 14001. Please help us fulfil this obligation by observing the environmental instructions in this manual: • Chapter "Packaging, transport and storage" • Chapter "Disposal" VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 7: Product Description

    Go to "www.vega.com", "Search". Enter the serial number. Alternatively, you can access the data via your smartphone: • Download the VEGA Tools app from the "Apple App Store" or the "Google Play Store" • Scan the Data Matrix code on the type label of the instrument or...

  • Page 8: Principle Of Operation

    The respective scope of delivery results from the order specification. Principle of operation Application area The VEGAFLEX 81 is a level sensor with cable or rod probe for continuous level or interface measurement, suitable for applications in liquids. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 9 High frequency microwave impulses are guided along a steel cable or terface measurement rod. Upon reaching the product surface, a part of the microwave im- pulses is reflected. The other part passes through the upper product and is reflected by the interface. The running times to the two product layers are processed by the instrument. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 10 Example: upper medium dielectric constant 2, lower medium at least dielectric constant 12. Gas phase (L3) • Air or gas mixture • Gas phase - dependent on the application, gas phase does not always exist (d2 = 0) VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 11: Packaging, Transport And Storage

    The integrated Bluetooth module (optional) enables wireless adjust- ment via standard adjustment devices: • Smartphone/tablet (iOS or Android operating system) • PC/notebook with Bluetooth USB adapter (Windows operating system) VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 12 PACTware with VEGA-DTM is required. You can find further information in the operating instructions "Interface adapter VEGACONNECT" (Document-ID 32628). VEGADIS 81 The VEGADIS 81 is an external display and adjustment unit for VEGA plics sensors. ® For sensors with double chamber housing the interface adapter "VEGADIS adapter"...
  • Page 13 The length and the process fittings can be configured individually. No different connection versions available. You can find further information in the operating instructions manual "Bypass tube VEGAPASS 81". Centering If you mount the VEGAFLEX 81 in a bypass tube or standpipe, you have to avoid contact to the bypass tube by using a spacer at the probe end. You can find additional information in the operating instructions manual "Centering". Fixing facility If there is a risk of the cable probe touching the vessel wall during operation due to product movements or agitators, etc., the measuring...

  • Page 14: Mounting

    Make sure before mounting that all parts of the instrument exposed to conditions the process are suitable for the existing process conditions. These are mainly: • Active measuring component • Process fitting • Process seal VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 15: Mounting Instructions

    Mounting instructions Installation position Mount VEGAFLEX 81 in such a way that the distance to vessel instal- lations or to the vessel wall is at least 300 mm (12 in). In non-metallic vessels, the distance to the vessel wall should be at least 500 mm (19.7 in).
  • Page 16 In such cases, always carry out a false signal suppression after mounting. You can find further information under "Setup procedure". DN25 ... DN150 ≤ 150 mm (5.91") ≤ 100 mm (3.94") > DN150 ... DN200 Fig. 7: Mounting socket When welding the socket, make sure that the socket is flush with the vessel top. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 17 "Technical data". Keep in mind for the adjustment that the default setting for the measuring range refers to water. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 18 If durability is no problem, we recommend the use of uncoated metal standpipes. When the VEGAFLEX 81 is used in bypass tubes, contact with the tube wall must be avoided. We recommend for this purpose a cable probe with centering weight.
  • Page 19 It does not matter if the standpipe is perforated or slotted for better mixing. Measuring probes can be mounted in standpipes up to DN 200. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 20 If durability is no problem, we recommend the use of uncoated metal standpipes. When the VEGAFLEX 81 is used in standpipes, contact with the tube wall must be avoided. We recommend for this purpose a cable probe with centering weight.
  • Page 21 If there is a risk of the cable probe touching the vessel wall during operation due to product movements or agitators, etc., the measuring probe can be strained. For this purpose there is an internal thread (M12 or M8) in the gravity weight. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 22 In case of difficult installation conditions, for example in a socket, the probe can be suitably adapted with a rod extension. To compensate for the resulting changes in signal runtime, let the instrument determine the probe length automatically. You can find further information in the supplementary instructions of the rod and cable components. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 23: Connecting To Power Supply And Bus System

    On plastic housings, the NPT cable gland or the Conduit steel tube must be screwed into the threaded insert without grease. Max. torque for all housings, see chapter "Technical data". VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 24: Connecting

    1 cm (0.4 in) insulation from the ends of the indi- vidual wires 4. Insert the cable into the sensor through the cable entry Fig. 14: Connection steps 5 and 6 5. Insert the wire ends into the terminals according to the wiring plan VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 25: Wiring Plan

    When inserting the terminal block again, you should hear it snap in. Wiring plan Overview Fig. 15: Position of connection compartment (Modbus electronics) and electron- ics compartment (sensor electronics) 1 Connection compartment 2 Electronics compartment VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 26 Fig. 17: Connection compartment USB interface 2 Slide switch for integrated termination resistor (120 Ω) Modbus signal Voltage supply Terminal Function Polarity Voltage supply Voltage supply Modbus signal D0 Modbus signal D1 Function ground when installing ac- cording to CSA (Canadian Standards Association) VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 27: Double Chamber Housing With Vegadis-Adapter

    To make a second measured value available for use, you can use the ics - Additional current supplementary electronics "Additional current output". output Both current outputs are passive and need a power supply. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 28: Switch-On Phase

    Additional current output (II) - Voltage supply and signal output (without HART) Ground terminal for connection of the cable screening Switch-on phase After VEGAFLEX 81 is connected to the bus system, the instrument carries out a self-test for approx. 30 seconds. The following steps are carried out: •...

  • Page 29: Set Up The Sensor With The Display And Adjustment Module

    The display and adjustment module is powered by the sensor, an ad- ditional connection is not necessary. Fig. 21: Insertion of the display and adjustment module Note: If you intend to retrofit the instrument with a display and adjustment module for continuous measured value indication, a higher lid with an inspection glass is required. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 30: Adjustment System

    [OK] will not be saved. Switch-on phase After switching on, the VEGAFLEX 81 carries out a short self-test where the device software is checked. The output signal transmits a fault signal during the switch-on phase. The following information is displayed on the display and adjustment module during the startup procedure: •...

  • Page 31: Parameter Adjustment - Quick Setup

    • Min. adjustment • False signal suppression You can find the description of the individual menu items in the follow- ing chapter "Parameter adjustment - Extended adjustment". Parameter adjustment - Extended adjustment For technically demanding measuring points, you can carry out extended settings in "Extended adjustment". Main menu The main menu is divided into five sections with the following func- tions: VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 32 In this menu item you select the distance unit and the temperature unit. For the distance units you can choose between m, mm and ft and for the temperature units °C, °F and K. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 33 This menu item is only available if you have selected level measure- ment under the menu item "Application". You can choose between the following medium types: Dielectric con- Type of medium Examples stant > 10 Water-based liq- Acids, alcalis, water uids VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 34 Adjust the requested percentage value with [+] and store with [OK]. Enter the appropriate distance value in m (corresponding to the percentage value) for the full vessel. The distance refers to the sensor reference plane (seal surface of the process fitting). Keep in mind that the max. level must lie below the dead band. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 35 Enter the respective distance value in m for the surface of the upper medium corresponding to the percentage value. Setup - Min. adjustment - This menu item is only available if you have selected interface meas- Interface urement under the menu item "Application". VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 36 For the socket correction you have to enter the height of the socket above the upper edge of the vessel. If the socket is lower than the up- per edge of the vessel, this value can also be negative. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 37 The default setting is min. current 3.8 mA and max. current 20.5 mA. Setup - False signal sup- The following circumstances cause interfering reflections and can pression influence the measurement: • High mounting sockets • Vessel internals such as struts VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 38 Lock/unlock setup - Ad- In the menu item "Lock/unlock adjustment", you can protect the sen- justment sor parameters against unauthorized or inadvertent modification. The PIN is activated/deactivated permanently. With active PIN, only the following adjustment functions are possible without entering a PIN: VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 39 The submenu points are described below. This menu item enables the setting of the requested national lan- Display - Menu language guage. In delivery status, the sensor is set to English. Display - Displayed value In this menu item, you define the indication of the measured value on the display. You can display two different measured values. In this menu item, you define measured value 1. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 40 If you have selected interface measurement under the menu item "Setup - Application", the peak values of the interface measurement are displayed in addition to the peak values of the level measurement. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 41 This menu item displays the peak values of the electronics tempera- ture as well as the dielectric constant. In another window you can carry out a reset of the two peak values separately. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 42 With the menu item "Setup" the echo curve it is possible to save at memory the time of setup. This is generally recommended; for using the Asset Management functions it is necessary. If possible, the curve should be saved with a low level in the vessel. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 43 PACTware. With the adjustment software PACTware and the PC the high-reso- lution echo curve can be displayed and used later on to assess the quality of the measurement. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 44 Probe length Länge der Messsonde factory set- ting Type of medium Liquid Application Level, vessel Medium, dielectric constant Water-based, > 10 Superimposed gas phase Dielectric constant, upper medium (TS) Tube inner diameter 200 mm VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 45 0 … 100 % correspond to 4 … 20 mA Current output 2 - Reaction in case of fault ≤ 3.6 mA Current output 2 - Min. 3.8 mA Current output 2 - Max. 20.5 mA VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 46 Before the data are stored in the sensor, a check is carried out to determine if the data fit the sensor. If the data do not fit, a fault signal is triggered or the function is blocked. When data are being written into the sensor, the display shows which instrument type the data originate from and which TAG-no. this sensor had. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 47 Additional settings - Scal- In menu item "Scaling format" you define the scaling format on the ing interface - Scaling display and the scaling of the measured interface value for 0 % and format 100 %. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 48 If you select the function "Analogue current output" and also enter an address number, you can output a 4 … 20 mA signal in Multidrop mode. In the mode "Fixed current (4 mA)" a fixed 4 mA signal is output inde- pendently of the actual level. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 49: Saving The Parameterisation Data

    Saving the parameterisation data On paper We recommended writing down the adjustment data, e.g. in this op- erating instructions manual, and archiving them afterwards. They are thus available for multiple use or service purposes. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 50 In the display and adjust- If the instrument is equipped with a display and adjustment module, ment module the parameter adjustment data can be saved therein. The procedure is described in menu item "Copy device settings". VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 51: Setting Up Sensor And Modbus Interface With Pactware

    Sensor electronics • Modbus electronics Fig. 25: Connecting the PC via USB to the Modbus electronics 1 USB cable to the PC To the RS 485 cable Connection of the PC to the RS 485 cable is carried out via a stand- ard interface adapter RS 485/USB. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 52: Parameter Adjustment With Pactware

    Further setup steps are described in the operating instructions manu- al "DTM Collection/PACTware" attached to each DTM Collection and which can also be downloaded from the Internet. Detailed descrip- tions are available in the online help of PACTware and the DTMs. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 53: Set Instrument Address

    CD from the agency serving you. Set instrument address The VEGAFLEX 81 requires an address for participating as a Slave in the Modbus communication. The addess setting is carried out via a PC with PACTware/DTM or Modbus RTU.

  • Page 54: Set Up With The Quick Setup

    The quick setup is another option for parameter adjustment of the sensor. It allows fast, convenient adjustment of the most important parameters to adapt the sensor quickly to standard applications. To use it, select the function "Quick setup" in the start screen. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 55 2 Extended adjustment Maintenance Quick setup With quick setup you can carry out the parameter adjustment of VEGAFLEX 81 for your application in just a few simple steps. The assistant-driven adjustment includes the basic settings for simple, reliable setup and commissioning. Information: If the function is inactive, then possibly no instrument is connected.

  • Page 56: Saving The Parameterisation Data

    7 Setting up sensor and Modbus interface with PACTware Saving the parameterisation data We recommend documenting or saving the parameterisation data via PACTware. That way the data are available for multiple use or service purposes. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 57: Diagnostics And Servicing

    Modification of a parameter • Switch-on and switch-off times • Status messages (according to NE 107) • Error messages (according to NE 107) The data are read out via a PC with PACTware/DTM or the control system with EDD. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 58: Status Messages

    Function check: The instrument is being worked on, the measured value is temporarily invalid (for example during simulation). This status message is inactive by default. It can be activated by the user via PACTware/DTM or EDD. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 59 Send instrument for repair Communication error • • F125 Temperature of the electronics in Check ambient temperature Bit 7 • the non-specified range Insulate electronics Impermissible • Use instrument with higher tem- electronics tem- perature range perature VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 60 Reduce level Bit 9 of • available 100 % adjustment: Increase value Byte 14 … 24 Overfilling • Check mounting socket • Remove possible interfering signals in the close range • Use coaxial probe VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 61: Rectify Faults

    The operator of the system is responsible for taking suitable meas- tion occurs ures to rectify faults. Procedure for fault recti- The first measures are: fication • Evaluation of fault messages via the adjustment device • Checking the output signal • Treatment of measurement errors VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 62 Wherever the sensor displays a constant value, the reason could also be the fault setting of the current output to "Hold value" • If the level indication is too low, the reason could be a line resist- ance that is too high VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 63 • in the close range. The sensor goes Check installation conditions • into overfill protection mode. The max. If possible, switch off the function level (0 m distance) as well as the "Overfill protection" status message "Overfill protection" are output. time VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 64: Exchanging The Electronics Module

    24 hour service hotline Should these measures not be successful, please call in urgent cases the VEGA service hotline under the phone no. +49 1805 858550. The hotline is also available outside normal working hours, seven days a week around the clock.

  • Page 65: Exchanging The Cable/Rod

    6. Exert counterforce with the second fork spanner and tighten the rod or cable on the flat surfaces with the following torque. Rod ø 8, cable ø 2 and 4: 6 Nm (4.43 lbf ft) Rod ø 12: 10 Nm (7.37 lbf ft) Fig. 39: Exchange cable or rod Information: Please maintain the specified torque so that the max. tensile strength of the connection remains. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 66: Software Update

    C Centering weight - cable ø 2 mm Threaded pins Thread M8 for eye-bolt Fixing screw - centering weight Software update The device software can be updated in the following ways: • Interface adapter VEGACONNECT • HART signal • Bluetooth VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 67: How To Proceed If A Repair Is Necessary

    You can find an instrument return form as well as detailed informa- tion about the procedure in the download area of our homepage: www.vega.com. By doing this you help us carry out the repair quickly and without having to call back for needed information. In case of repair, proceed as follows: •...

  • Page 68: Dismount

    Pass the instrument directly on to a specialised recycling company and do not use the municipal collecting points. If you have no way to dispose of the old instrument properly, please contact us concerning return and disposal. VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 69: Supplement

    Ʋ Inspection window in housing cover Polycarbonate (with Ex d version: glass) (optional) Ʋ Ground terminal 316L Ʋ Cable gland PA, stainless steel, brass Ʋ Sealing, cable gland Ʋ Blind plug, cable gland VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 70 ±(2 mm + 0.05 % of the cable length) Lateral load Ʋ Rod: ø 8 mm (0.315 in) 10 Nm (7.38 lbf ft) Ʋ Rod: ø 12 mm (0.472 in) 30 Nm (22.13 lbf ft) VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 71 45 … 75 % Ʋ Air pressure +860 … +1060 mbar/+86 … +106 kPa (+12.5 … +15.4 psig) Mounting, reference conditions Ʋ Min. distance to internal installations > 500 mm (19.69 in) Ʋ Vessel metallic, ø 1 m (3.281 ft), centric mounting, process fit- ting flush with the vessel ceiling VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 72 ± 5 mm (0.197 in) ment Typical deviation - Total level interface See following diagrams measurement Typical deviation - Level measurement See following diagrams 2)3) With interface measurement = 2.0. Depending on the mounting conditions, deviations can occur which can be rectified by adapting the adjustment or changing the measured value offset in the DTM service mode. The dead bands can be optimized via a false signal suppression. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 73 (-0.079 ") -10 mm (-0.591 ") 0,15 m 0,3 m 0,07 m (5.906 (11.811 " ") (2.756 ") 0,05 m (1.97 ") Fig. 43: Deviation VEGAFLEX 81 in rod version in oil Dead band (no measurement possible in this area) Probe length VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 74 (-0.079 ") -15 mm (-0.591 " 0,15 m 0,3 m 0,05 m (5.906 (11.811 " ") (1.969 ") 0,08 m (3.15 ") Fig. 45: Deviation VEGAFLEX 81 in cable version (ø 2 mm/0.079 in), in medium oil Dead band (no measurement possible in this area) Probe length VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 75 (0.079 ") -2 mm (-0.079 ") -15 mm (-0.591 ") 0,1 m 0,2 m 0,07 m (3.937 (7.874 " " (2.756 ") Fig. 47: Deviation VEGAFLEX 81 in cable version (ø 4 mm/0.157 in, PFA-coated) in water Dead band (no measurement possible in this area) Probe length VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 76 0.52 % Hydrogen 20 °C (68 °F) -0.01 % 0.1 % 0.61 % 200 °C (392 °F) -0.02 % 0.05 % 0.37 % 400 °C (752 °F) -0.02 % 0.03 % 0.25 % VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 77 Ʋ FFKM (Kalrez 6375) - with tempera- -20 … +200 °C (-4 … +392 °F) ture adapter Time span after a sudden measuring distance change by max. 0.5 m in liquid applications, max 2 m with bulk solids applications, until the output signal has taken for the first time 90 % of the final value (IEC 61298-2). VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 78 Fig. 50: Ambient temperature - process temperature, version with temperature adapter Ambient temperature Process temperature (depending on the seal material) Aluminium housing Plastic housing Stainless steel housing, precision casting Stainless steel housing, electropolished VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 79 Time format 12 h/24 h Time zone, factory setting Max. rate deviation 10.5 min/year Additional output parameter - Electronics temperature Range -40 … +85 °C (-40 … +185 °F) Resolution < 0.1 K Deviation ±3 K VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 80: Basics Modbus

    Instruments with approvals can have different technical specifications depending on the version. For that reason the associated approval documents of these instruments have to be carefully noted. They are part of the delivery or can be downloaded under www.vega.com, "Instrument search (serial number)" as well as in the download area. 10.2 Basics Modbus Bus description The Modbus protocol is a communication protocol for the communication between instruments.
  • Page 81 Fig. 51: Bus architecture Modbus Connection resistor Bus participant Voltage supply Protocol description The VEGAFLEX 81 is suitable for connection to the following RTUs with Modbus RTU or ASCII protocol. Protocol ABB Totalflow Modbus RTU, ASCII Bristol ControlWaveMicro Modbus RTU, ASCII...

  • Page 82: Modbus Register

    (4 bytes) according to IEEE 754 are transmitted with individually selectable order of the data bytes (byte transmission order). This "Byte transmission order" is determined in the parameter "Format Code". Hence the RTU knows the registers of the VEGAFLEX 81 which must be contacted for the variables and status information.
  • Page 83 See Register 100 2102 DWord Primary Variable in Byte Order DCBA (Little Endian) 2104 DWord Secondary Variable in Byte Order DCBA (Little Endian) 2106 DWord Third Variable in Byte Order ABCD DCBA (Little Endian) VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 84: Modbus Rtu Commands

    1 Byte 0x03 Start Address 2 Bytes 0x0000 to 0xFFFF Number of Registers 2 Bytes 1 to 127 (0x7D) Response: Function Code 1 Byte 0x03 Start Address 2 Bytes Register Value N*2 Bytes Data VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 85 2 Bytes Data N*2 Bytes Data Implemented function codes: Sub Function Code Name 0x00 Return Data Request 0x0B Return Message Counter With sub function codes 0x00 only one 16 bit value can be written. VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 86 1 Byte FC43 Sub 14, Read Device Identification With this function code, the Device Identification can be queried. Parameter Length Code/Data Request: Function Code 1 Byte 0x2B MEI Type 1 Byte 0x0E Read Device ID Code 1 Byte 0x01 to 0x04 Object ID 1 Byte 0x00 to 0xFF VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 87: Levelmaster Commands

    List of Object value 1 Byte Depending on the Object ID 10.5 Levelmaster commands The VEGAFLEX 81 is also suitable for connection to the following RTUs with Levelmaster protocol. The Levelmaster protocol is often called "Siemens" "Tank protocol". Protocol ABB Totalflow...
  • Page 88 Set number of Floats Parameter Length Code/Data Request: Set number of Floats 5 characters ASCII UuuFn Response: Set number of Floats 6 characters ASCII UuuFOK If the number is set to 0, no level is returned VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 89 = milliseconds (50 up to 250), default = 127 ms Error codes Error Code Name EE-Error Error While Storing Data in EEPROM FR-Error Erorr in Frame (too short, too long, wrong data) LV-Error Value out of limits VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 90: Configuration Of Typical Modbus Hosts

    10 Supplement 10.6 Configuration of typical Modbus hosts Fisher ROC 809 (Rx/Tx -) (Rx/Tx +) +30 Vdc Fig. 52: Connection of VEGAFLEX 81 to RTU Fisher ROC 809 VEGAFLEX 81 RTU Fisher ROC 809 Voltage supply ABB Total Flow Bus + Bus - VBAT Fig. 53: Connection of VEGAFLEX 81 to RTU ABB Total Flow VEGAFLEX 81 RTU ABB Total Flow VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 91 Voltage supply Bristol ControlWave Micro RS 485 on COM1 1 +SV 2 RX- 3 TX- 4 GND 5 RXT 6 TXT 7 not used 8 not used +30 Vdc Fig. 55: Connection of VEGAFLEX 81 to RTU Bristol ControlWave Micro VEGAFLEX 81 RTU Bristol ControlWave Micro Voltage supply VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 92: Dimensions

    ScadaPack - Register address for 1302 is address 31303 10.7 Dimensions The following dimensional drawings represent only an extract of all possible versions. Detailed dimensional drawings can be downloaded at www.vega.com/downloads under "Drawings". VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 93 10 Supplement Housing ~ 87 mm ~ 84 mm (3.43") ø 84 mm (3.31") ø 79 mm (3.31") (3.11") M16x1,5 M16x1,5 M20x1,5/ M20x1,5/ ½ NPT ½ NPT Fig. 57: Dimensions housing (with integrated display and adjustment module the housing is 9 mm/0.35 in higher) Plastic double chamber Aluminium/Stainless steel double chamber VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 94 10 Supplement VEGAFLEX 81, cable version with gravity weight SW 36 (1.42") (G¾, ¾ NPT) SW 41 (1.61") (G1, 1 NPT) SW 46 (1.81") (G1½, 1½ NPT) G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT ø 4 mm (0.16") ø...
  • Page 95 10 Supplement VEGAFLEX 81, cable version with centering weight SW 36 (1.42") (G¾, ¾ NPT) SW 41 (1.61") (G1, 1 NPT) SW 46 (1.81") (G1½, 1½ NPT) G¾, ¾ NPT, G1, 1 NPT, G1½, 1½ NPT ø 4 mm (0.16") ø...
  • Page 96 G1½, 1½ NPT G1½, 1½ NPT ø 8 mm ø 12¨mm (0.32") (0.47") Fig. 60: VEGAFLEX 81, threaded version Sensor length, see chapter "Technical data" Rod version ø 8 mm (0.315 in) Rod version ø 12 mm (0.472 in) VEGAFLEX 81 • Modbus and Levelmaster protocol...

  • Page 97: Industrial Property Rights

    Les lignes de produits VEGA sont globalement protégées par des droits de propriété intellec- tuelle. Pour plus d'informations, on pourra se référer au site www.vega.com. VEGA lineas de productos están protegidas por los derechos en el campo de la propiedad indus- trial. Para mayor información revise la pagina web www.vega.com.
  • Page 98 – Electronics module, Modbus 12 Fault rectification 61 – Fixing facility 13 – Rod components 13 Functional principle 9 – Spacer 13 Reset 44 Gas phase 34 Scaling measured value 47 HART address 48 Sensor characteristics 49 VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 99 INDEX Sensor status 40 Service hotline 64 Simulation 42 Special parameters 49 Type label 7 Type of medium 33 Units 32 VEGAFLEX 81 • Modbus and Levelmaster protocol...
  • Page 100 Subject to change without prior notice © VEGA Grieshaber KG, Schiltach/Germany 2019 VEGA Grieshaber KG Phone +49 7836 50-0 Am Hohenstein 113...

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