Siemens WF 705 Description
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Siemens WF 705 Description

Position measuring module
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Equipment for Special Machines
WF 705
Position Measuring Module
Description
Edition 11.96

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Summary of Contents for Siemens WF 705

  • Page 1 Equipment for Special Machines WF 705 Position Measuring Module Description Edition 11.96...
  • Page 2 Overview Configuration WF 705 Position Measuring Module Operation with SIMATIC S5 Description Operation with SIMATIC S7 - 400 Technical Data EMV Recommendations Ordering Data/ Documentation Edition November 1996...
  • Page 3 SIEMENS office. The content of this documentation is not part of an earlier or existing agreement, acceptance or legal matter. All obligations by Siemens are set in the corresponding sales contract which also contains the complete and single valid settlement. The contract guarantee will not be enlarged or limited by this documentation.

  • Page 4: Table Of Contents

    ... 2.1.3 Example with five Encoders on the WF 705 ....Configuration of the Actual Value Distributor .
  • Page 5 ......Plugging the WF 705 in the SIMATIC S7-400 rack and in coupled SIMATIC S5 extension units ....
  • Page 6 Pin Assignment of Front Connectors ....5.2.3 Cable from WF 705 Module to SSI Absolute Encoder ..5.2.4 Cable from Actual Value Distributor to SSI Absolute Encoder .

  • Page 7: Overview

    SIMATIC S5 PLCs (control versions S5-115U, S5-135U, S5-155U) and SIMATIC S7-400. The WF 705 can measure up to 12 independent axes. Up to 8 WF 705 modules can be used in one SIMATIC S5 PLC and this makes it possible to work with up to 96 axes.

  • Page 8: Data Of The Ssi Absolute Encoder

    Possible number of steps per revolution at Standard SSI (pine-tree array): 1024 2048 4096 8192 • Maximum of 4096 revolutions • 25-bit data transfer format • 24 V power supply voltage 1 - 2 © Siemens AG 1996 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 9: Configuration

    Configuration Versions The serial-absolute encoders can either be connected directly to the WF 705 module or via the actual value distributor. If the encoders are connected directly to the WF 705, their 24V DC power supply is provided by the module.

  • Page 10: Example With Five Encoders On The Wf 705

    Configuration 11.96 2.1.3 Example with five Encoders on the WF 705 Hybrid operation of directly connected encoders and encoders connected via the actual value distributor is possible. However, the power supply for those two versions must be the same (common ground).

  • Page 11: Configuration Of The Actual Value Distributor

    X113 X114 The actual value distributor transmits the clock pulses (CLK) arriving from the WF 705 on connector X111 via X112/X113/X114 to max. three encoders or transmits the signals (data) of max. 3 encoders via X112/X113/X114 to the connector X111 and thus to the WF 705.
  • Page 12 Configuration 11.96 2 - 4 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 13: Operation With Simatic S5

    Possible Slots for WF 705 in the SIMATIC S5 Rack It is not possible to use the WF 705 module in remote-linked extension racks (with IM 308/ IM 318). Each WF 705 module needs four address bytes in the peripheral area. The starting address must therefore be a multiple of four.
  • Page 14 Slot desig- 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163 nation WF 705 3 - 2 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 15: Functional Description

    EINRDB DBBG The DBBG data block provides the actual position values of the appropriate WF 705 module. This data block is generated automatically by function block FB 103 (EINRDB) with a length of 48 data words. During system start up, FB 103 is called in FB100/130/160 and checks if DBBG already exists and if it doesn't, it is generated.

  • Page 16: Fb100/130/160: Anl-705

    GE 5 D,KF GE 6 D,KF GE 7 D,KF GE 8 D,KF GE 9 D,KF GE 10 D,KF GE 11 D,KF GE 12 Baud D,KF 3 - 4 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 17: Normal Operation (Cyclical)

    GE of the relevant axis as the function block is designed for the so-called „tree” format. Please ask the encoder manufacturer if you require further information. BAUD Data transfer rate between encoder and WF 705 or actual value distributor 125 Kbit/s up to a cable length of 120 m...

  • Page 18: Fb101/111/131/161: Weg-705

    FW230 are to be read-out (DUAL). This parameter signals a break or a short-circuit in the cable, FEHL FW 242 wrong parameter assignment or wrong axis selection. 3 - 6 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 19 4 are to be read-out at 125 Kbit/s (120m cable). The bit is only evaluated for axes which have been selected in the ACHS parameter. 0804Hex © 3 - 7 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 20: Data Block Interface

    Actual position value of axis 11 High DW45 Actual position value of axis 11 DW46 High Actual position value of axis 12 DW47 Actual position value of axis 12 3 - 8 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 21 Operation with SIMATIC S5 Data format of the actual value, e.g. for axis 1 DW24 DW25 The highest possible value from the encoder is 2 -1=33554431 © 3 - 9 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 22: Application Example For Position Measurement Of 12 Axes

    Number of steps/revolution axis 12 0011 BAUD : FW 122 Read-out all axes at 125 kbaud 0012 KF+128 0013 FEHL : F 100.0 0014 0015 0016 : BE 3 - 10 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 23 FW120 0002 : JU FB111 0003 NAME : WEG-705 0004 DBBG : DB100 0005 ACHS : FW120 0006 FEHL : FW124 0007 0008 : BE © 3 - 11 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 24: Commissioning/Trouble-Shooting

    Operation with SIMATIC S5 11.96 Commissioning/Trouble-Shooting 3.4.1 WF 705 Jumper and Switch Settings WF 705 X ME 3 - 12 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 25: Module Address (Dpr Address)

    OPEN CLOSE Example 2: Address 128 Switch No. OPEN CLOSE 3.4.1.2 Other Jumper Settings on the WF 705 Module: Jumper X7: CLOSE External ground: 5 V ground connected to 24V ground (state on delivery) OPEN External ground: 5 V ground not connected to 24V ground...

  • Page 26: Jumper Settings On The Actual Value Distributor

    X114 Jumper W1: CLOSE Screen with external ground (No function in WF 705) OPEN Jumper W2: CLOSE Connection of external 24V ground to WF 705 module OPEN Jumper W3: CLOSE (No function in WF 705) OPEN 3.4.3 Information about Trouble-Shooting Please check the following items: •...

  • Page 27: Operation With Simatic S7-400

    Plugging the WF 705 in the SIMATIC S7-400 rack and in coupled SIMATIC S5 extension units The WF 705 module can be used in the SIMATIC S7-400 in different ways: • In SIMATIC S7-400 central units by means of SIMATIC S5 adapter casing •...
  • Page 28 Occupies 1 slot (data see catalog ST 70) Up to 8 modules (adapter casings) can be plugged Up to 3 modules (adapter casings) can be plugged 4 - 2 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 29 11 19 27 35 43 51 59 67 75 83 91 99 107 115 123 131 139 147 155 163 nation IM 314 WF 705 © 4 - 3 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 30: Functional Description

    In case of restart, the program continues at the point of interruption in the cycle. The WF 705 cannot restart, i.e. when used in the SIMATIC S7-400, an "automatic restart" is not admissible, but an "automatic initial start".

  • Page 31: Fc100: Anl_705

    Operation with SIMATIC S7-400 4.2.3 FC100: ANL_705 Block for initial start, restart and generation of the work data block of the WF 705. 4.2.3.1 Description This block is used to preset the module after an initial start or a restart. It needs the following specifications: •...

  • Page 32: Block Call In Ob 100

    FC100: ANL_705 DBBG GE 1 GE 2 GE 3 GE 4 GE 5 GE 6 GE 7 GE 8 GE 9 GE10 GE11 GE12 BAUD 4 - 6 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 33 The binary result BIE, and thus ENO, is set to "1" if the block was terminated without fault. If a fault occurs, the binary result BIE, and thus ENO, will be set to "0". © 4 - 7 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 34: Normal Operation (Cyclic)

    • The actual values are always read out from the WF 705 via "single fetch". 4.2.5 FC100: WEG_705 This block reads out the actual position values of axes 1 to 12 for the WF 705 position measuring module. 4.2.5.1 Description The FC100:WEG_705 block reads out the actual position values of up to 12 axes.

  • Page 35: Block Call In Ob 1

    Bit 12 ⇒ DB does not exist Bit 13 ⇒ No axis selected Bit 14 ⇒ DB is write- protected Bit 15 ⇒ CB is too short © 4 - 9 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 36 Byte x+1 Byte x Fault display axis 2 Fault display axis 1 Example: A fault is signalled for axis 2. Byte x+1 0002 Byte x 4 - 10 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 37 Axes 3, 12 with 1 Mbit/s (25 m cable) Byte x+1 0804 Byte x Only those bits of the BAUD parameter are evaluated which have been selected in the ACHS parameter. © 4 - 11 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 38: Assignment Of The Dbbg Work Data Block

    FC ANL_705 with a length of 100 bytes during an initial start or a restart. If the user generates the DBBG, the bytes from DBB 100 will be available to the user. DBBG for one WF 705 Data block -...

  • Page 39: Example Of Position Measuring

    WF 705 in the SIMATIC S7-400. Addressing the WF 705 as SIMATIC S7-400 Periphery The WF 705 module can be used in the SIMATIC S7-400 in different ways: • In a SIMATIC S7-400 central unit by means of SIMATIC S5 adapter casing •...
  • Page 40 – S7 addresses start at 512. • S5 adress: – Address which is set by the addressing switch S1 on the WF 705. The range is set separately. • Length (dual-port RAM) – The WF 705 has a fixed length of 4 bytes.

  • Page 41: Simatic S7-400 Periphery

    (P, Q) by 4 bytes. On the last IM 314, plug in a terminating connector (see catalog ST 50, chapter 3/S5-135U/155U under ordering data of interfaces). © 4 - 15 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 42: Commissioning/Trouble-Shooting

    Operation with SIMATIC S7-400 11.96 4.4.2 Commissioning/Trouble-Shooting 4.4.2.1 WF 705 Jumper and Switch Settings WF 705 Jumper X9: CLOSE OPEN For testing only, interrupts the clock line (used in factory only) Jumper X7: CLOSE External ground: 5 V ground connected to 24V ground...

  • Page 43: Jumper Settings On The Actual Value Distributor

    X114 Jumper W1: CLOSE Screen with external ground (No function in WF 705) OPEN Jumper W2: CLOSE Connection of external 24V ground to WF 705 module OPEN Jumper W3: CLOSE (No function in WF 705) OPEN © 4 - 17...

  • Page 44: Information About Trouble-Shooting

    • Is the 24V DC power supply for the encoders connected to the actual value distributor and/or connected directly to the WF 705 module? • If no position values are read-out for certain axes or if the values do not change when the encoder is turned by hand, e.g.

  • Page 45: Technical Data

    25 bit Code Gray Space required in SIMATIC S5 rack Space required in SIMATIC S7 rack The WF 705 module does not need a fan rack. © 5 - 1 Siemens AG 1994 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 46 See chapter 5.2.2 for pin assignment of the front connectors. — 6FM1 790-1G Observe the screening instructions in chapter 6! ↑ Space for the length code For details, see chapt. 7 5 - 2 © Siemens AG 1994 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 47 Encoder 9 CLK Encoder12 CLK +24V Encoder 9 CLK – Encoder12 CLK – Connector X +24V for encoders which get their power from the WF 705 © 5 - 3 Siemens AG 1994 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 48 11.96 5.2.3 Cable from WF 705 Module to SSI Absolute Encoder Cable from WF 705 module directly to encoder, no connector on cable. This cable is always connected to the first axis in the front connector. MLFB 6FM1 790-1G 00 Order No.:...
  • Page 49 The screen of the actual value cable must be generously grounded on the actual value distributor side (refer to chapter 6). © 5 - 5 Siemens AG 1994 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 50: Cable From Wf 705 Module To Actual Value Distributor

    Technical Data 11.96 5.2.5 Cable from WF 705 Module to Actual Value Distributor Order No.: MLFB 6FM1 790-1H 00 WF 705 Actual value distributor Front connector X2,3,4,5 Front connector X111 brown CLK1+ CLK1+ black CLK1 – CLK1 – white DATA1+...

  • Page 51: Emv Recommendations

    DIN VDE 0113, part 1 Spurious peaks can be caused if relays are used undeleted. For this reason, relays and connections must be equipped with fuses. © 6 - 1 Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 52 EMV Recommendations 11.96 6 - 2 © Siemens AG 1990 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)

  • Page 53: Ordering Data/Documentation

    6FM1 790-1GC00 120 m at 125 Kbit/s 18 m 6FM1 790-1GD00 25 m at 1 Mbits/s ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– WF 705 – to actual value distributor 6FM1 790-1HA00 10 m 6FM1 790-1HB00 ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– Actual value distributor to SSI absolute encoder (no connector on cable)
  • Page 54 Ordering Data/Documentation 11.96 7 - 2 © Siemens AG 1994 All Rights Reserved 6ZB5 440-0AA02 WF 705 (Description)
  • Page 55 Suggestions Siemens AG Corrections For Publication/Manual: AUT 22 Postfach 3180 WF 705 D-91050 Erlangen Position Measuring Module Fed. Rep. of Germany Description Order No.: 6ZB5 440-0AA02-0BA5 Edition: November 1996 From: Should you come across any printing errors Name when reading this publication, please notify this sheet.
  • Page 56 Siemens AG Bereich Automatisierungstechnik Geschäftsgebiet Automatisierungs- systeme für Werkzeugmaschinen, Roboter und Sondermaschinen © Siemens AG 1996 Subject to change without prior notice Postfach 3180, D-91050 Erlangen Federal Republic of Germany Order No.: 6ZB5 440-0AA02-0BA5 Siemens Aktiengesellschaft Printed in the Fed. Rep. of Germany...

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