Siemens SINAMICS DCM Operating Instructions Manual page 356

Descriptions of functions
10.3 PROFINET IO
The contents of the pointer file optboard.txt can be modified or read out using parameter
p8835. This file must be edited manually with other firmware versions. The factory setting for
the parameter is p8835 = 1 (PROFINET V2.2).
Indices of p8835:
1 = PROFINET V2.2
2 = PN Gate
3 = SINAMICS Link
99 = customer-specific
Writing the parameter modifies the contents of the file optboard.txt if the written value
corresponds to a firmware version on the card. Reading the parameter displays the contents
of the file optboard.txt. The versions can be switched between by modifying the parameter. A
POWER ON must then be performed to activate the change.
Identification of firmware version:
The OMI diagnostic channel, parameter r8858 can be read to identify which firmware version
of PROFINET interface is currently loaded.
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SINAMICS DCM Control Module
Operating Instructions, 06.2010, C98130-A7067-A1-02-7619