Siemens ST PCS 7 manual 11/40, Mounting, Expansion limits, ATechnical specifications

© Siemens AG 2007

Process I/O

ET 200S distributed I/O

Introduction

Mounting

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.

Expansion limits

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

■ATechnical specifications

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“

ET 200S configuration

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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Siemens ST PCS 7 · November 2007