Wiring and Fitting Modules
4.4 Insertion and removal of fail-safe modules
ET 200S Distributed I/O System - Fail-Safe Modules
36 Installation and Operating Manual, 08/2008, A5E00103686-07
4.4 Insertion and removal of fail-safe modules
Inserting and Removing Electronic Modules
In ET 200S, the same procedure is used to insert and remove both fail-safe modules and
standard modules on terminal modules (see ET 200S Distributed I/O System manual).
Inserting and Removing Electronic Modules during Operation
F-modules can be inserted and removed during operation in exactly the same way as
standard modules in ET 200S.
Note
Hot-swapping fail-safe modules in ET 200S during operation generates a communication
error on the F-CPU.
You must acknowledge this communication error in your safety program. (For information on
the response of the F-system after communication errors, output of a fail-safe value and user
acknowledgment, refer to the
S7 Distributed Safety, Configuration and Programming
or
S7
F/FH Systems, Configuring and Programming)
.
If the communication error is not acknowledged, the useful data of the F modules remain
passivated (inputs and outputs in "0" state).
Conditions for Insertion and Removal during Operation
The table below lists the F-modules which support hot-swapping and the conditions under
which this is possible:
Table 4- 1 Conditions for Hot-Swapping Fail-Safe Modules
Module Insertion and
Removal
Conditions
Interface module No —
Fail-safe power module (PM E-F pm) Yes
Fail-safe power module (PM E-F pp) Yes
Fail-safe power module (PM D-F) Yes
Load voltage must be switched off
Fail-safe electronic module (F-DI) Yes —
Fail-safe electronic module (F-DI/DO) Yes Load voltage must be switched off
Fail-safe electronic module (F-DO) Yes Load voltage must be switched off
Fail-safe electronic module (F-RO) Yes Load voltage must be switched off
Remember to Set the PROFIsafe Address
When replacing F-modules, ensure that the address switch (DIP switch) settings of the left of
the modules match.
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