Siemens SIMATIC Operating Instructions Manual page 146

Diagnostic Data of Fail-Safe Modules
Bytes 24 to 26 for 4/8 F-DI/4 F-DO
The following figure shows the content of bytes 24 to 26 of the diagnostic data.
Figure A-7
Bytes 16 to 18 for F-Switch
The following figure shows the content of bytes 16 to 18 of the diagnostic data of the F-
Switch.
Figure A-8
146
Bytes 24 to 26 of Diagnostic Data
Bytes 16 to 18 of the Diagnostic Data of the F-Switch
ET 200pro Distributed I/O System - Fail-Safe Modules
Operating Instructions, 05/2007, A5E00394073-02