Siemens WF 705 Operating and installation instructions

Equipment for Special Machines

WF 705

Position Measuring Module

a

Edition 11.96Description

WF 705

Position Measuring Module

Description

Edition November 1996

Overview

1

Configuration

2

Operation with SIMATIC S5

3

Operation with

SIMATIC S7 - 400

4

Technical Data

5

EMV Recommendations

6

Ordering Data/

Documentation

7

Note

Because of clear arrangement, this documentation does not inform about all details of

all types of the product. Therefore, it cannot take into account all possible cases of

installations, operation and maintenance.

If you require additional information or have special questions, please seek further

particulars from your local 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.

BERO, SIMATIC, SIMODRIVE, SINEC, SINUMERIK, STEP are registered trade marks of Siemens.

The remaining designations contained in this "Description" may be trade marks whose use through

third parties for their own purposes may infringe the rights of the owners of the mark.

Subject to technical changes.

The reproduction, transmission or use of this document or of its

contents is not permitted without express written authority.

Offenders will be liable for damages. All rights, including rights

supplied by patent grant or registration of a utility model or design,

are reserved.

©

Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.1 Application . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.2 Characteristics of the WF 705 . . . . . . . . . . . . . . . . . . . . . . . 1-1

1.3 Data of the SSI Absolute Encoder . . . . . . . . . . . . . . . . . . . . 1-2

2 Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1 Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1 Example with four Encoders on the WF 705 . . . . . . . . . . . . . 2-1

2.1.2 Example with twelve Encoders on the WF 705 . . . . . . . . . . . 2-1

2.1.3 Example with five Encoders on the WF 705 . . . . . . . . . . . . . . 2-2

2.2 Configuration of the Actual Value Distributor . . . . . . . . . . . . . 2-3

3 Operation with SIMATIC S5 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.1 Possible Slots for WF 705

in the SIMATIC S5 Rack . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1

3.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.2.1 Function Block Numbers Dependent on the Type of AU . . . . . 3-3

3.2.2 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3

3.2.3 FB100/130/160: ANL-705 . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2.3.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2.3.2 Information about Application . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2.3.3 Block Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-4

3.2.3.4 Block Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.2.4 Normal Operation (cyclical) . . . . . . . . . . . . . . . . . . . . . . . . . 3-5

3.2.5 FB101/111/131/161: WEG-705 . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.5.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.5.2 Execution Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.5.3 Block Call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.5.4 Block Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-6

3.2.5.5 Format of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-7

3.2.6 Data Block Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-8

3.3 Application Example for Position Measurement of 12 Axes . . . 3-10

3.3.1 Initial Start and Restart . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-10

3.3.2 Cyclic, Time-Driven or Interrupt-Driven Execution . . . . . . . . . 3-11

3.4 Commissioning/Trouble-Shooting . . . . . . . . . . . . . . . . . . . . 3-12

3.4.1 WF 705 Jumper and Switch Settings . . . . . . . . . . . . . . . . . 3-12

3.4.1.1 Module Address (DPR Address) . . . . . . . . . . . . . . . . . . . . . 3-13

3.4.1.2 Other Jumper Settings on the WF 705 Module . . . . . . . . . . 3-13

3.4.2 Jumper Settings on the Actual Value Distributor . . . . . . . . . . 3-14

3.4.3 Information about Trouble-Shooting . . . . . . . . . . . . . . . . . . 3-14

4 Operation with SIMATIC S7-400 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1

4.1 Plugging the WF 705 in the SIMATIC S7-400 rack and

in coupled SIMATIC S5 extension units . . . . . . . . . . . . . . . . 4-1

4.2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.2.1 Possible CPU Types . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.2.2 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4

4.2.3 FC100: ANL_705 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.2.3.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.2.3.2 Information about Application . . . . . . . . . . . . . . . . . . . . . . . 4-5

4.2.3.3 Block Call in OB 100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6

4.2.3.4 Block Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7

4.2.4 Normal Operation (Cyclic) . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.2.5 FC100: WEG_705 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.2.5.1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.2.5.2 Execution Times . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-8

4.2.5.3 Block Call in OB 1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4.2.5.4 Block Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-9

4.2.5.5 Format of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-10

4.2.6 Assignment of the DBBG Work Data Block . . . . . . . . . . . . . 4-12

4.3 Example of Position Measuring . . . . . . . . . . . . . . . . . . . . . . 4-13

4.4 Addressing the WF 705 as

SIMATIC S7-400 Periphery . . . . . . . . . . . . . . . . . . . . . . . . 4-13

4.4.1 Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14

4.4.2 Commissioning/Trouble-Shooting . . . . . . . . . . . . . . . . . . . . 4-16

4.4.2.1 WF 705 Jumper and Switch Settings . . . . . . . . . . . . . . . . . 4-16

4.4.2.2 Jumper Settings on the Actual Value Distributor . . . . . . . . . . 4-17

4.4.2.3 Information about Trouble-Shooting . . . . . . . . . . . . . . . . . . 4-18

4.5 Multiprocessing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-18

5 Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.1 Characteristics of the Module . . . . . . . . . . . . . . . . . . . . . . . . 5-1

5.2 Connection of the Module . . . . . . . . . . . . . . . . . . . . . . . . . . 5-2

5.2.1 Overview of Cables and Devices . . . . . . . . . . . . . . . . . . . . . 5-2

5.2.2 Pin Assignment of Front Connectors . . . . . . . . . . . . . . . . . . . 5-3

5.2.3 Cable from WF 705 Module to SSI Absolute Encoder . . . . . . . 5-4

5.2.4 Cable from Actual Value Distributor to

SSI Absolute Encoder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-5

5.2.5 Cable from WF 705 Module to Actual Value Distributor . . . . . . 5-6

6 EMV Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1

7 Ordering Data / Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-1

11.96 Overview

1 Overview

1.1 Application

In addition to positioning of closed loop servo axes, today's automated machines require

position measurements of a number of axes.

The WF 705 position measuring module offers:

• Auxiliary axes

• Set up axes

• Handling and transportation functions

• Measuring functions

The WF 705 provides these functions in a space-saving and cost-effective way, compared to

conventional solutions.

The WF 705 module can be used as a peripheral device in medium- and high-performance

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.

1.2 Characteristics of the WF 705

• 12 axes per module

• Installation width

- 1 SEP (SIMATIC S5)

- 2 SEP in adapter casing (SIMATIC S7)

• Digital absolute position measurement with synchronous-serial data transfer

• Less cabling needed than with parallel-absolute position measurement

• Data format: Dual Code at transfer to SIMATIC S5/S7

• Interference-free data transfer: RS 422

• Settable transfer rate dependent on length of cabling

1 Mbit/s: max. cable length 25 m

125 Kbit/s: max. cable length 120 m

• Required peripheral address space per WF 705: 4 bytes

• Cable break and short circuit monitoring

1 - 1

WF 705 (Description)

Overview 11.96

1.3 Data of the SSI Absolute Encoder

• Gray code

• 125 Kbit/s to 1 Mbit/s transfer rate

• Possible number of steps per revolution at Standard SSI (pine-tree array):

128

256

512

1024

2048

4096

8192

• Maximum of 4096 revolutions

• 25-bit data transfer format

• 24 V power supply voltage

1 - 2

WF 705 (Description)

11.96 Configuration

2 Configuration

2.1 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.

2.1.1 Example with four Encoders on the WF 705

For cable, refer to

chapter 5.2.4

Encoder axis 1

Encoder axis 2

Encoder axis 4

Encoder axis 3

24 V

power supply

a

WF 705 with adapter casing S7 Actual value in DBBG on:

S5 S7

➯DW 24/25 DBD 48

➯DW 30/31 DBD 60

➯DW 36/37 DBD 72

➯DW 42/43 DBD 84

2.1.2 Example with twelve Encoders on the WF 705

If more than four axes have to be connected, then three axes are connected to one actual

value distributor. The 24 V DC power supply for these encoders is fed through the actual value

distributor.

a

24 V

power supply

WF 705 with adapter casing S7

©

2 - 1

WF 705 (Description)

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).

Actual value in DBBG on:

S5 S7

➯DW 24/25 DBD 48

➯DW 30/31 DBD 60

➯DW 42/43 DBD 84

➯DW 44/45 DBD 88

➯DW 46/47 DBD 92

24 V

power

supply

a

WF 705 with adapter casing S7

Encoder axis 1

Encoder axis 2

Encoder axis 3

Encoder axis 4

Encoder axis 5

2 - 2 ©

WF 705 (Description)

Siemens WF 705 Operating and installation instructions

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