Siemens Simatic M7-400

Diagnostic Data of the Signal Modules
B-10
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Bytes 2 and 3 of the SM 422; DO 32 24 VDC/0.5 A
Byte 2
76 0
Operating status 0: RUN
1: STOP
Module-internal supply voltage failure
54321
0
Byte 3
76 0
EPROM error
54321
0
0
0
00 0
000 000
Figure B-11 Bytes 2 and 3 of the Diagnostic Data of the SM 422; DO 32 x 24 VDC/0.5 A