Siemens Simatic M7-400 Manual de usuario Pagina 586

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Diagnostic Data of the Signal Modules
B-12
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Bytes 11 to 42 of the SM 422; DO 32 24 VDC/0.5 A
Data record 1 with bytes 11 to 42 contains the channel-specific diagnostic data.
The figure below shows the assignment of the diagnostic byte for a channel of the
module.
76 0
Short-circuit to L+
Short-circuit to M
Wire break
External auxiliary supply missing
54321
0
Configuring/parameter assignment error
00
Figure B-13 Diagnostic Byte for a Channel of the SM 422; DO 32 x 24 VDC/0.5 A
Bytes 2 and 3 of the SM 422; DO 16 20-120 VAC/2 A
Byte 2
76 0
Operating status 0: RUN
1: STOP
54321
0
Byte 3
76 0
EPROM error
54321
0
0
0
00 0
000 000
0
Figure B-14 Bytes 2 and 3 of the Diagnostic Data of the SM 422; DO 16 x 20-120 VAC/2 A
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