Byte
Bit
Meaning
Byte 3
7
0
6
Hardware interrupt lost
5
0
4
ADC/DAC error
3
0
2
EPROM error
1
0
0
0
Bytes 4 and 7 of the SM 431; AI 8 x RTD x 16 bit
Table B-22
Bytes 4 to 7 of the diagnostic data of the SM 431; AI 8 x RTD 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: 16 bits long
0
Byte 6
7
Number of channels of the same type in one module: 8 channels
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
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