Siemens Simatic S7-400

Bytes 4 to 8 of the SM 431; AI 16 x 16 bit
Table B-19 Bytes 4 to 8 of the diagnostic data of the SM 431; AI 16 x 16 bit
Byte Bit Meaning
Byte 4 7 0
6 Channel type B#16#71: Analog input
5
4
3
2
1
0
Byte 5 7 Number of diagnostics bits that the module outputs per channel: 8 bits long
0
Byte 6 7 Number of channels of the same type in one module: 16 channels
0
Byte 7 7 Channel error 7
6 Channel error 6
5 ...
4 ...
3 ...
2 ...
1 Channel error 1
0 Channel error 0
Diagnostic data of signal modules
B.5 Diagnostic data of the analog input modules as of byte 2
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08 421