Siemens ET 200S Manual page 123

Replacing a Defective Electronic Module
You have already removed the electronic module:
1. Remove the code element from bottom of the new electronic module.
2. Insert the new electronic module (same type) in the terminal module until you
hear it snap into place.
3. Identify the new electronic module.
Removing and Inserting Electronic Modules during Operation
ET 200S supports the removal and insertion of modules during operation (during
the RUN operating mode). The ET 200S remains in RUN mode when an electronic
module is removed. The protective conductor connections of the ET 200S are not
interrupted.
Note
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You cannot remove and insert modules during operation unless the
corresponding parameters have been assigned. See Section 8.1.
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You can remove and insert modules during operation as of the IM151-1 BASIC,
IM151-1 STANDARD (6ES7 151-1AA01-0AB0), IM151-1 FO STANDARD, and
IM151-1 HIGH FEATURE.
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If one module is missing (gap) and the ET 200S is switched on, the station will
not start up (see Section 6.6.10).
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The removal and insertion of modules affects the clocking (equidistance).
If you replace more than one module, only one gap can result.
The following table indicates which modules you can remove and insert under
which conditions:
Table 5-1
Interface module
Power modules
Digital electronic modules (input)
Digital electronic modules (output)
Analog electronic modules
Distributed I/O System ET 200S
EWA 4NEB 780 6024-02 07
Removing and Inserting Electronic Modules
Modules Removing and
Inserting
No –––
Yes The load voltage must be
switched off.
Yes –––
Yes The load voltage must be
switched off by means of an
external switch/fuse.
Yes –––
Wiring and Fitting
Conditions
5-27