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Siemens SIWAREX MS Device Manual
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Siemens SIWAREX MS Device Manual

Siemens SIWAREX MS Device Manual

Weigh module for simatic s7-200
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SIWAREX
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Status 12/2005

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Summary of Contents for Siemens SIWAREX MS

  • Page 1 ® SIWAREX Device Manual Status 12/2005...
  • Page 2 Brand names / Trademarks SIWAREX®, SIMATIC®, SIMATIC HMI® and SIMATIC NET® are trade marks of the Siemens AG. The other designations in this info may be trade marks the use of which by third persons for their own purposes might infringe proprietor rights.

  • Page 3: Table Of Contents

    Safety Instructions Table of Contents Preface SIWAREX MS Scope of Delivery Weigh module for SIMATIC S7-200 Product Overview Device Manual Hardware Configuration and Assembly Weighing Functions Commands Messages and Diagnosis Programming in STEP 7 Setting the Scale – SIWATOOL MS...
  • Page 4 Five Basic Rules for Guaranteeing EMC............4-10 ........................4-11 SSEMBLY .................... 4-12 ONNECTION AND IRING 4.4.1 Connection Areas for SIWAREX MS..............4-12 4.4.2 Shielding Connection..................4-12 4.4.3 Connection of 24 V Power Supply..............4-13 4.4.4 Ground Connection to the Interference Dissipation ........... 4-13 4.4.5...
  • Page 5 ..............8-43 RESETTING THE YSTEM ODULE “M ” L ............8-45 SING THE ICRO CALE IBRARY IN ICRO SIWAREX MS ................8-47 YCLIC ROGRAM ............8-48 ARAMETER OF THE ICRO CALE IBRARY 8.5.1 First_AEW, Second_AEW, Third_AEW, Fourth_AEW: IN, WORD....8-48 8.5.2 FirstVB_POINTER: IN, DWORD ................
  • Page 6 FIGURE 5-5 PARAMETER DEFINITION OF LIMIT VALUES..........5-29 FIGURE 8-1 SYSTEM DATA MODULE BEFORE THE ADJUSTMENT......8-43 FIGURE 8-2 SYSTEM DATA MODULE AFTER THE ADJUSTMENT (FOR 4 SIWAREX MS MODULE) 8-44 FIGURE 8-3 MODULE ADRESS ..................8-44 FIGURE 8-4 LINKING THE LIBRARY INTO MICRO/WIN ..........8-45 FIGURE 8-5 MICROSCALE LIBRARY BOUND INTO MICRO/WIN ........
  • Page 7 FIGURE 8-9 OVERVIEW SCREEN FOR SIWAREX MS IN TP077MICRO ....... 8-51 FIGURE 9-1 SIWATOOL MS WINDOWS ................9-53 Tables TABLE 1-1 SCOPE OF THIS MANUAL ................1-1 TABLE 1-2 OVERVIEW OF THE CHAPTER ..............1-2 TABLE 4-1 EXPANSION MODULE IN THE S7-200 SYSTEM ........... 4-9 TABLE 4-2 LOAD CELL CONNECTIONS.................

  • Page 9: Siwarex Ms

    V. 1.0 Table 1-1 Scope of this manual Note This manual describes the SIWAREX MS weighing electronics as part of the SIMATIC S7-200 system and should be used as a supplement to the manual for the S7-200. Note This manual contains a description of the module that is valid at the time of publication.

  • Page 10: Index

    Overview of the chapter 1.4 Further Support Do you still have questions concerning the use of the SIWAREX MS? Then please contact your Siemens representative in the office or business location that is responsible for your area or technical support for SIWAREX Tel.: +49 (0)721 595 2811.

  • Page 11: Scope Of Delivery

    SIWAREX MS can be operated with the following S7-200 CPUs: 6ES7212-1AB23-0XB0, 6ES7212-1BB23-0XB0, 6ES7214-1AD23-0XB0, 6ES7214-1BD23-0XB0, 6ES7214-2AD23-0XB0, 6ES7214-2BD23-0XB0, 6ES7216-2AD23-0XB0, 6ES7216-2BD23-0XB0. SIWAREX MS can also be used with the S7-200 SIPLUS CPUs but SIWAREX MS itself is not designed for expanded environmental conditions: 6AG1212-1AB23-2XB0, 6AG1212-1BB23-2XB0, 6AG1214-1AD23-2XB0, 6AG1214-1BD23-2XB0, 6AG1214-2AD23-2XB0, 6AG1214-2BD23-2XB0, 6AG1216-2AD23-2XB0, 6AG1216-2BD23-2XB0.

  • Page 12: Product Overview

    3.2 Area of Application SIWAREX MS is the optimum solution wherever signals from STRAIN GAUGE sensors or load cells are to be recorded. SIWAREX MS provides high accuracy as weighing electronics. With measuring times of 20 ms (or 33 ms), the module can also be used for electronic evaluation for force measurement.

  • Page 13: Structure

    Force measurement, container scales, platform scales and crane scales 3.3 Structure SIWAREX MS is an expansion module for the SIMATIC S7-200 and operates together with other expansion modules of the system. The installation and cabling for the 71,2 mm wide module is minimal. Load cell, power supply and TTY interface connections are made with screw terminals and the RS232 serial interface with a 9-pin D-sub connector.

  • Page 14: Function

    Integration into SIMATIC enables the processing of weight values directly in the PLC. SIWAREX MS is already being adjusted in house. This means that the scale can be adjusted to theoretical settings without using any adjustment weights and modules can be exchanged without readjusting the scale.

  • Page 15: Figure 3-2 Siwatool Ms Overview

    SIWATOOL MS does more than support you in adjusting the scale. It is very useful to analyze the diagnostic buffer, the contents of which can be saved along with the parameters after reading from the module. You can switch between languages German, English, French, Italian and Spanish in the program. SIWAREX MS 3-7...

  • Page 16: Hardware Configuration And Assembly

    For configuration, assembly and commissioning, the definitions from the manual for the SIMATIC S7-200 are applicable. This chapter provides you with additional information for hardware configuration and assembly, and for preparing the SIWAREX MS for operation. The technical safety information is to be strictly adhered to. Warning Unqualified intervention in the device/system or not adhering to the warning notices can result in serious injury or damage to equipment.

  • Page 17: Configuring The Hardware

    Hardware Configuration and Assembly 4.1 Configuring the Hardware SIWAREX MS is an analog expansion module running in the SIMATIC S7-200 automation system. The maximum possible number of SIWAREX MS expansion modules per rack corresponds with the maximum number of expansion modules of the respective CPU type according to the S7-200 system manual.

  • Page 18: Coupling Mechanisms

    Hardware Configuration and Assembly Interference infiltrating the system through the power supply and/or protective ground Interference can impair the fault-free functioning of the SIWAREX MS. 4.2.4 Coupling Mechanisms Depending on the means of distribution (conductive or non-conductive bound) and the distance between the interference source and the device, interference can be introduced into the automation system through four different coupling mechanisms.

  • Page 19: Assembly

    The respective potential compensation is mandatory for Ex applications. 4.3 Assembly When assembling the SIMATIC components and the SIWAREX MS, the installation, assembly and wiring guidelines for the SIMATIC S7-200 must be followed (see S7-200 manual).

  • Page 20: Connection And Wiring

    Hardware Configuration and Assembly 4.4 Connection and Wiring 4.4.1 Connection Areas for SIWAREX MS All connections can be made from the front. Figure 4-1 SIWAREX MS connection areas 4.4.2 Shielding Connection Special attention must be given to the shield strip for the shielded lines. Only correct installation guarantees that the system will be immune to interference.

  • Page 21: Connection Of 24 V Power Supply

    (the load cells must be connected in parallel). If the distance from a load cell to SIWAREX MS or to the junction box is greater than the available length of the load cell connecting cable, the SIWAREX EB extension box should be used.

  • Page 22: Table 4-2 Load Cell Connections

    The maximum distance between the SIWAREX MS and the load cell is applicable when using the recommended cables. The power supply (6V) for the load cells comes from the SIWAREX MS. (terminal EXC+ and EXC-). The connection should be made using the cable indicated in chapter 10 Accessories.

  • Page 23: Figure 4-3 Load Cell Connection With A 4-Wire System

    The two figures below show the load cell connection using 4-wire and 6-wire systems. Figure 4-3 Load cell connection with a 4-wire system Figure 4-4 Load cell connection with a 6-wire system The maximum distance of 500 m applies to using cables as specified in chapter 10 Accessories. SIWAREX MS 4-15...

  • Page 24: Connecting The Remote Display From Siebert

    The type S102 display made by Siebert can be connected to the TTY interface. Figure 4-5 Connecting the S102 display 4.4.7 Connecting the PC for SIWATOOL MS Ready-made cables are available for connecting to the PC (see Accessories) Figure 4-6 Connecting the PC 4-16 SIWAREX MS...

  • Page 25: Led Display Elements

    LED 5 ¼ d zero → 0 ← Green LED 6 Max. exceeded LED 7 24 V connected + 24 VDC Green LED 8 Table 4-3 Display elements (LED) For more information on LEDs, see chapter 7.7. SIWAREX MS 4-17...

  • Page 26: Preparing For Operation

    After applying the 24V supply voltage and a short initialization phase (internal LED check on tests, are indicated by LED running sequence), the SIWAREX MS goes into SIWAREX MS operating status. The following LEDs must have the status that is indicated...

  • Page 27: Weighing Functions

    Weighing Functions 5 Weighing Functions 5.1 General The SIWAREX MS can be used as a weighing instrument or as measuring electronics for force measurement. SIWAREX MS has no legal certification for calibration however. All parameters are set with default values from the manufacturer. Using the “Load factory settings”...
  • Page 28 Numeral step (1, 2, 5, 10, 20) 5.2.10 For description see chapter Standstill Range Standstill range in weight unit 5.2.12 For description see chapter Standstill Time TIME 1000 Standstill time in ms 5.2.11 For description see chapter 5-20 SIWAREX MS...

  • Page 29: Table 5-1 Allocation Of Ds3

    The analogue measurement value coming from the load cells is converted into a digital value with an analog-digital converter. A weight value is then calculated from this digital value. All functions of the SIWAREX MS then use this weight value to determine the status and for messages.
  • Page 30 (without the weight of the construction itself) is 5461, the plausibility of the characteristic curve can be roughly estimated, to determine load deviations for example. The illustration shows the relationship between the adjustment digits and the adjustment weight. 5-22 SIWAREX MS...

  • Page 31: Figure 5-1 Adjustment Digits And Weight Value

    If the adjustment weights and adjustment digits of a SIWAREX MS are known then the adjustment procedure does not need to be performed. These are simply sent with the data record DS3 to the SIWAREX MS and the scale is immediately ready for operation.

  • Page 32: Ds3 - Characteristic Value Range

    Depending on the characteristic value of the connected load cells, the value 1 mV/V, 2 mV/V or 4 mV/V must be selected. Since the SIWAREX MS supplies the load cells with approximately 6 V, the measuring input is redefined according to the expected measurement voltage (max.

  • Page 33: Ds3 - Limit Frequency

    The average value filter is used to settle the weight value against interference. The weight value is based on the average of the n weight values that the SIWAREX MS calculates every 20 ms or 33 ⅓ ms, e.g. if n=10, 10 measurement values are used to calculate the average value.

  • Page 34: Ds3 - Minimum Weight For The Weighing Range

    (standstill value) within a defined time (standstill time). Standstill monitoring is used in static operation of the scale (commands: Zero, Tare). The figure below illustrates the functioning of the standstill monitoring feature. Figure 5-4 Standstill monitoring 5-26 SIWAREX MS...

  • Page 35: Ds3 - Decimal Place For Remote Display And Ascii Weight Output

    5.2.16 DS3 – Tare Max. Weight T- The SIWAREX MS will accept any external tare specification, which is smaller than the max. tare weight (percentage of weighing range). The tare commands are also accepted as long as the current gross weight is still below the tare max. weight that can be parameterized.

  • Page 36: Ds 4 Limit Value Parameters

    A maximum value monitor is realized with the following specification: Switch on value > Switch off value A minimum value monitor is realized with the following specification: Switch on value < Switch off value The figure below illustrates the function of limit values 1 and 2. 5-28 SIWAREX MS...

  • Page 37: Ds 2 - Switch-Off Weight, Limit Value 1

    The limit values can be defined in relation to the gross weight or the net weight of the scale. 5.4 DS 9 Info on Module No entries can be made in DS9. The data record is used for information about the module’s firmware version. SIWAREX MS 5-29...

  • Page 38: Ds 15 Tare Entry

    DS 15 is used for external specification of the tare weight. Once specified with DS 15, the tare value is not yet activated. The transfer to SIWAREX MS tare memory is then done using command “Accept tare entry” (see command code 24). The specified tare value is rounded to the numeral step set in the parameters.

  • Page 39: Ds 30 Process Values

    For description see chapter Millisecond Runtime – Milliseconds (0..999) 5.7.12 For description see chapter Second BYTE Runtime – Seconds (0...59) Minute BYTE Runtime – Minutes (0...59) Hour Runtime – Hours (0...32000) Table 5-6 Allocation of DS 30 SIWAREX MS 5-31...

  • Page 40: Ds 30 - Scale Status

    (No adjustment parameter DS3 or adjustment commands can be sent) Min. weighing range 1 = Min. weighing range undershot undershot Booting The SIWAREX module is starting up Module group fault 1 = Global module fault / operating error (SF) Table 5-7 Status information 5-32 SIWAREX MS...

  • Page 41: Ds 30 - Operating Errors

    DS 30 – Tare The current tare weight, in the resolution specified in the numeral step (DS3). 5.7.9 DS 30 – Unfiltered Raw Digit Value from AD Converter The current digit value from the AD converter without digital signal filtering. SIWAREX MS 5-33...

  • Page 42: Ds 30 - Filtered Digital Value From The Ad Converter

    (external remote display type Siebert S102 or ASCII). 5.7.12 DS 30 – Runtime Duration When the SIWAREX MS module is switched on, a timer is started to ensure correct assignment of the messages in the message buffer. When the messages are entered in the message buffer, they are given the current time value from this timer.

  • Page 43: Commands

    Every command has a unique number. A command can be sent via various interfaces (SIMATIC-CPU, SIWATOOL MS). Each time a command is sent to SIWAREX MS, a check must be made to determine whether the command has been executed properly or not. The data and operating errors (synchronous errors, see chapter 7.5) generated provide...

  • Page 44: Table 6-1 Siwarex Ms Command List

    “Net” and the status “Preset tare pT” is set. Table 6-1 SIWAREX MS command list More information on command transfers from the control program via the SIMATIC interface can be found in chapter 8 Programming in STEP 7.

  • Page 45: Messages And Diagnosis

    7.2 Message Paths The SIWAREX MS messages are passed on to the operator by various paths. During configuration, it is important to choose the right path for routing and processing the messages.

  • Page 46: Detection Of Messages Using The Microscale Library

    MicroScale library. Errors can be detected in library work with an output variable Lib_error_bits. The operating errors and operation and data errors are indicated in the parameter defined variable memory (see chapter 8 Programming in STEP 7.) 7-38 SIWAREX MS...

  • Page 47: Message List Data And Operating Errors (Synchronous Messages)

    Negative value not permitted A parameter contains a negative value that is not permitted. Selection code not permitted for The selection code for the TTY interface is not the TTY interface permitted. Set a valid value (0 or 1). SIWAREX MS 7-39...

  • Page 48: Message List Of Operating Messages (Asynchronous Errors)

    The module had to be reset because of a critical error. Reboot due to program error The error can mean that the module is defective. Contact the SIWAREX Hotline. Reserved Reserved Parameter error The parameters are not consistent (the 7-40 SIWAREX MS...

  • Page 49: Table 7-2 List Of Operating Messages

    1= No 24 V power supply 1= Number overflow in weight calculation 1= Parameter error 1= AD converter at limit of measuring range 1= Minimum voltage undershot on sensor line 1= AD converter fault Table 7-3 Message byte for operating messages SIWAREX MS 7-41...

  • Page 50: Messages Via Leds

    Messages and Diagnosis 7.7 Messages via LEDs The LEDs on the front of the SIWAREX MS are used to signal the following status and error messages. State display during Label Description operation color OFF: No operating error System Fault ON: Operating error...

  • Page 51: Programming In Step 7-Micro/Win

    We recommend using the program and expanding it for different applications. 8.2 Presetting the System Data Module The system data module must be adapted during the configuration of the expansion module SIWAREX MS. The intended analog input range (AEW) is not to be filtered for the SIWAREX MS! Figure 8-1 System data module before the adjustment The filter is deactivated after the adjustment.

  • Page 52: Figure 8-2 System Data Module After The Adjustment

    Programming in STEP 7-Micro/Win Figure 8-2 System data module after the adjustment (for 4 SIWAREX MS module) Figure 8-3 Module adress 8-44 SIWAREX MS...

  • Page 53: Using The "Micro Scale " Library In Micro /Win

    File / Library add/delete… , actuate button “Add…” and select the respective library from the CD path: Figure 8-4 Linking the library into Micro/Win fter saving, the library appears in the operation tree and can be used at any time. SIWAREX MS 8-45...

  • Page 54: Figure 8-5 Microscale Library Bound Into Micro/Win

    Programming in STEP 7-Micro/Win Figure 8-5 MicroScale library bound into Micro/Win 8-46 SIWAREX MS...

  • Page 55: Siwarex Ms In Cyclic Program

    SIWAREX MS communicates with the SIMATIC CPU with the help of the MicroScale library. The SIWAREX library is on the CD of the configuration package SIWAREX MS for SIMATIC S7-200 in the S7-200_Software directory. The project consists of several stations. To continue, select the appropriate station for your configuration.

  • Page 56: Call Parameter Of The Microscale Library

    (e.g. Data storage, commands, etc.). 8.5.1 First_AEW, Second_AEW, Third_AEW, Fourth_AEW: IN, WORD SIWAREX MS requires 4 words in the input area of the SIMATIC CPU for operation. The parameters First_AEW, Second_AEW, Third_AEW and Fourth_AEW must match with the actual module addresses.

  • Page 57: Variable Memory Allocation

    WORD W#16#0 (Only to be used for library MicroScale) Error during library processing VW n+18 Lib_Error_Bits WORD W#16#0 (=Library parameter “SBR_Error_Bits”) n = Start byte in variable memory, see library parameter “FirstVB_POINTER” Table 8-1 Variable memory allocation SIWAREX MS 8-49...

  • Page 58: Siwarex Ms Getting

    Programming in STEP 7-Micro/Win 8.7 SIWAREX MS Getting Started SIWAREX MS Getting started is “ready to use” application software for a scale. It consists of a project with the following programs: 8.7.1 STEP 7-Micro/Win Program The project has the name: SIWAREX_MS_Getting_Started_TP177micro.mwp.

  • Page 59: Figure 8-9 Overview Screen For Siwarex Ms In Tp077Micro

    Programming in STEP 7-Micro/Win In addition to the image for displaying the current weight value, other system images can be created depending on the application. Figure 8-9 Overview screen for SIWAREX MS in TP077micro SIWAREX MS 8-51...

  • Page 60: Setting The Scale - Siwatool Ms

    9.2 Windows and Functions of SIWATOOL MS The program window is constructed so that navigating through the parameter definition areas of the SIWAREX MS is made easier. In the left-hand portion, the overview of the parameters is shown as a tree-structure. The parameter grouping corresponds with the various activities which can happen during the project planning, commissioning, tests and for service cases.

  • Page 61: Figure 9-1 Siwatool Ms Windows

    Tips can also be helpful in remembering the meanings of certain parameters (text is displayed if the mouse pointer is positioned over a field). Clicking on the menu option “Help”, calls up the “SIWAREX MS” manual. Installation of Acrobat Reader is necessary to read the manual.

  • Page 62: Accessories

    Accessories 10 Accessories There are necessary and optional accessories for the SIWAREX MS. SIWAREX MS 7MH4 930-0AA01 Scale electronics for scales in SIMATIC S7-200 for non- calibratable applications, Weight 0.2 kg for connection of a scale SIWAREX MS Device Manual...
  • Page 63 Cable Li2Y 1 x 2 x 0.75 ST + 2 x (2 x 0.34 ST) - CY 7MH4 702-8AG for connection of SIWAREX MS, U, M, FTA, FTC, P with connection and junction box (JB), expansion box (EB) or Ex...

  • Page 64: Table 10-1 Accessories

    PVC insulating sleeve, approx. 10.8 mm exterior diameter for ambient temperature –20 to +70°C Cable LiYCY 4 x 2 x 0.25 mm² 7MH4 407-8BD0 for TTY (2 cable pairs connected in parallel), for connection of remote display Table 10-1 Accessories 10-56 SIWAREX MS...

  • Page 65: Technical Data

    6ES7214-1BD23-0XB0, 6ES7214-2AD23-0XB0, 6ES7214-2BD23-0XB0, S7-200 CPUs 6ES7216-2AD23-0XB0, 6ES7216-2BD23-0XB0. SIWAREX MS can also be used with the S7-200 SIPLUS CPUs but the SIWAREX MS expansion module itself is not designed for expanded environmental conditions: 6AG1212-1AB23-2XB0, 6AG1212-1BB23-2XB0, 6AG1214-1AD23-2XB0, 6AG1214-1BD23-2XB0, 6AG1214-2AD23-2XB0, 6AG1214-2BD23-2XB0, 6AG1216-2AD23-2XB0, 6AG1216-2BD23-2XB0.

  • Page 66: Load Cell Connection

    Typical DC 6 V * Maximum current 150 mA Permitted load cell resistance without Ex-I interface > 40 Ω with feed from SIWAREX MS < 4010 Ω Permitted load cell resistance with Ex-i-Interface > 87 Ω < 4010 Ω Monitor for sensor inputs typically ≥...

  • Page 67: Tty Interface

    Weight 165 g Table 11-7 Data: Dimensions and weight 11.8 Environmental Conditions The SIWAREX MS is designed for use in SIMATIC S7 200 systems under the following conditions. Conditions of use in accordance with IEC 60721: IEC60721-3-3 Operation: Stationary application, weatherproof...

  • Page 68: Mechanical Requirements And Data

    IEC 68000-2-32 Table 11-9 Data: Mechanical requirements 11.10 Electrical-, EMC- and Climatic Requirements 11.10.1 Electrical Protection and Safety Requirements Note: The licenses that are currently valid for SIWAREX MS are indicated on the SIWAREX MS rating plate. 11-60 SIWAREX MS...
  • Page 69 94/9/EC “Explosion protection” Note: Further information on EC directives can be found in the product documentation accompanying every SIWAREX MS. Underwriters Laboratories Inc. to UL 508 (Industrial Control Equipment) MSA C22.2 No. 142 (Process Control Equipment) UL 1604 (Hazardous Location) MSA-213 (Hazardous Location) HAZ.

  • Page 70: Electromagnetic Compatibility

    < 46 dBVµ Average value 5 - 30 MHz < 60 dBVµ Quasi-tip < 50 dBVµ Average value Interference immunity (Industrial use): Comments Standard Degree of severity Burst pulses on power supply IEC 61000-4-4 2 kV lines: 11-62 SIWAREX MS...
  • Page 71 The S7-200 must be installed in a closed metal housing. For all cables, shielded cable must be used. The cable shielding must be grounded on both ends at low resistance. To meet requirements, an external protection element should be used (e.g.: Blitzductor VT AD24V, by Dehn&Söhne) SIWAREX MS 11-63...

  • Page 72: Climatic Requirements

    -1000 to 2000 m above sea level : < 0.5 ppm; Pollutant concentration Rel. humidity < 60 %, S: < 0.1 ppm; rel. humidity < 60 % non-condensing Table 11-12 Data: Climatic requirements 11-64 SIWAREX MS...
  • Page 73 Scale commands .......6-35, 6-36 Effects of Interference ......4-9 Scale Name .......... 5-25 Environmental conditions ....11-64 Scale status .......... 5-32 Function..........3-6 Scope of Delivery ........2-3 Further Support ........1-2 Service and adjustment commands . 6-35 SIWAREX MS 12-65...
  • Page 74 Visual check ........4-18 Switch off weight, limit value 1 ..... 5-29 Weighing Functions ......5-19 Switch on weight, limit value 1 ..... 5-28 Wiring............ 4-12 Synchronous messages..... 7-37 Zero Setting .......... 5-27 System Integration ......... 3-6 12-66 SIWAREX MS...
  • Page 75 Operator Panel (SIMATIC) P-RP Parameter Protection Personal Computer Preset tare (predefined tare weight with manual taring) Random Access Memory STEP 7 Programming device software for SIMATIC S7 Subroutine Tare weight Touch Panel (SIMATIC) Variable range Load cell(s) SIWAREX MS 13-67...

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