Siemens SIMATIC S7-400 Reference Manual page 410
Automation system module
data
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- Installation manual (316 pages) ,
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Diagnostic data of signal modules
B.3 Diagnostic data of the digital input modules as of byte 2
Byte 3
Bytes 4 to 8 of the SM 421; DI 16 x UC 24/60 V
Table B-7
Byte 4
Byte 5
Byte 6
410
Byte
Bit
7
0
6
Hardware interrupt lost
5
0
4
0
3
0
2
EPROM error
1
0
0
0
Bytes 4 to 8 of the diagnostic data of the SM 421; DI 16 x UC 24/60 V
Byte
Bit
7
0
6
Channel type B#16#70: Digital input
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: 16 channels
0
Meaning
Meaning
S7-400 Automation System Module Data
Reference Manual, Ausgabe 11/2016, A5E00850736-08
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