Siemens SINUMERIK 840Di sl Commissioning Manual page 266

PROFIBUS DP Communication
8.6 DP slave MCP 310
Customized response
The following organization blocks can be added to the PLC user program to customize the
response to a DP slave MCP 310 failure:
● OB 82: Diagnostic interrupt
● OB 86: Rack failure
Please refer to the corresponding SIMATIC literature for details of linking organization blocks
and evaluating diagnostic data.
NOTICE
No alarm is initiated by the basic PLC program if there is a failure of an MCP connected via
PROFIBUS. The triggering of a corresponding alarm is the sole responsibility of the user
(machine manufacturer).
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Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Manual