Siemens SIMATIC Operating Instructions Manual page 145

Channel-Specific Diagnostics Starting at Byte 8 to Byte 23
The channel-specific diagnostics start in byte 8 of the diagnostic data. Four bytes of
diagnostic information are provided per channel.
Figure A-6
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02
Channel-Specific Diagnostics Starting in Byte 8 of the Diagnostic Data
Diagnostic Data of Fail-Safe Modules
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