Siemens SIMATIC S7-400 Reference Manual page 415

Byte 3
Bytes 4 to 10 of the SM 422; DO 32 x DC 24 V/0.5 A
Table B-13
Byte 4
Byte 5
Byte 6
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
Byte Bit
7 0
6 0
5 0
4 0
3 0
2 EPROM error
1 0
0 0
Bytes 4 to 10 of the diagnostic data of the SM 422; DO 32 x DC 24 V/0.5 A
Byte Bit
7 0
6 Channel type B#16#72: digital output
5
4
3
2
1
0
7 Number of diagnostics bits that the module outputs per channel: 8 bits long
0
7 Number of channels of the same type in one module: 32 channels
0
B.4 Diagnostic data of the digital output modules as of byte 2
Meaning
Meaning
Diagnostic data of signal modules
415