Siemens Simatic M7-400 Manual de usuario Pagina 593

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Diagnostic Data of the Signal Modules
B-19
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Bytes 8 to 23 of the SM 431; AI 8 16 Bit
Data record 1 with bytes 8 to 23 contains channel-specific diagnostic data. The
following figure shows the assignment of the even diagnostic bytes (bytes 8, 10, to
22) for a channel of the module.
76 0
Configuring/parameter assignment error
Wire break
Underflow
Overflow
54321
000
Reference channel error
Figure B-26 Even Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit
The following figure shows the assignment of the odd diagnostic bytes (bytes 9,
11, to 23) for a channel of the module.
76 0
Run time calibration error
54321
0
User calibration doesn’t correspond to the parameter assignment
0 0 000
Figure B-27 Odd Diagnostic Byte for a Channel of the SM 431; AI 8 x 16 Bit
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