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B-10 – Siemens Simatic S7-400 User Manual

Page 584

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Diagnostic Data of the Signal Modules

B-10

S7-400, M7-400 Programmable Controllers Module Specifications

A5E00069467-07

Bytes 2 and 3 of the SM 422; DO 32

24 VDC/0.5 A

Byte 2

7 6

0

Operating status 0: RUN

1: STOP

Module-internal supply voltage failure

5 4 3 2 1

0

Byte 3

7 6

0

EPROM error

5 4 3 2 1

0

0

0 0

0

0

0 0 0

0 0

0

Figure B-11

Bytes 2 and 3 of the Diagnostic Data of the SM 422; DO 32 x 24 VDC/0.5 A

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