Siemens Simatic M7-400 Manual de usuario Pagina 592

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Diagnostic Data of the Signal Modules
B-18
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Bytes 2 and 3 of the SM 431; AI 8 16 Bit
Byte 2
76 0
Operating status 0: RUN
1: STOP
54321
0
Byte 3
76 0
EPROM error
ADC/DAC error
Hardware interrupt lost
54321
0
0
000 0
000
Thermocouple connection error
RAM error
Figure B-24 Bytes 2 and 3 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit
Bytes 4 to 7 of the SM 431; AI 8 16 Bit
Byte 4
76 054321
Byte 5
70
Channel type B#16#71: analog input
Number of diagnostic bits that the module
outputs per channel: 16 bits long
Byte 6
70
Number of channels of the same
type in one module: 8 channels
Byte 7
76 0
Channel error, channel 0
Channel error, channel 1
Channel error, channel 6
Channel error, channel 7
54321
...
...
...
...
...
0
Figure B-25 Bytes 4 to 7 of the Diagnostic Data of the SM 431; AI 8 x 16 Bit
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