Siemens Welding System ST PCS 7 User Manual

ET 200S distributed I/O

Siemens ST PCS 7 · November 2007

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The terminal modules that can be mounted on a DIN rail (35 x 

15 x 7.5 or 15 mm) form the carrier system for the I/O modules. 

They are used for the process wiring and enable the electrical 

and mechanical connection of the I/O modules. The terminal 

modules can be prewired and tested without the I/O modules. 

The I/O modules are simply plugged in place later. Terminal 

modules are available with screw connections, spring-loaded 

terminals or FastConnect design for fast mounting.
The automatic coding of the I/O modules reliably prevents the 

risk of injury to persons and/or destruction of modules through 

accidental mounting of the wrong module.

Depending on the IM 151 interface module used, the expansion 

of an ET 200S station is subject to the following limits:
• A maximum total of 63 I/O modules per station can be inserted 

between interface module and terminating module

• The maximum permissible width of an ET 200S station is 2 m
• The maximum address volume of all the inserted I/O modules 

is 244 byte for input data and 244 byte for output data

• The maximum number of parameters is restricted to 244 byte 

per station

The SIMATIC ET 200 configurator can be used to compile an 

ET 200S station rapidly and simply. It knows the configuration 

rules, and supports selection of all components and associated 

accessories in interactive mode. The SIMATIC ET 200 is avail-

able in the current CD-ROM Catalog CA 01 and on the Internet.
Additional information is available in the Internet under:

http://www.siemens.com/et200

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Detailed technical data on the ET 200S can be found 
• in the IK PI catalog or 
• in the Mall / CA 01 at "Distributed I/Os / ET 200S“

© Siemens AG 2007