Page 238 - PLC Automation

236 MAIN CATALOG PLC AUTOMATION

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Application descriptions

Hot Swap of S500 I/O modules

for increased availability

Replacing S500 I/O modules while the system
is running
The hot swap terminal units TU516-H, TU532-H
and TU542-H allow no-load hot swapping of S500
I/O modules during operation. When replacing a
S500 I/O module the other modules in the cluster
continue operating.

This capability is available for an I/O cluster with
the following fieldbuses:
• PROFIBUS
• PROFINET
• Modbus TCP

Hot swap terminal units can also be used in
I/O configurations attached to AC500 CPU
modules.

Hot swap terminal units can be mixed with all nor-
08
mal terminal units (except safety terminal units)
in the same configuration, when only specific
modules need to be hot swapped.

The hot swapping feature is also available for
extreme condition variants of S500.