Battery status register (read-only) (pag – Siemens Simatic Industrial PC IPC427C User Manual

Page 140

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Detailed descriptions

16.4 I/O Address Areas

SIMATIC IPC427C

140

Operating Instructions, 04/2009, A5E02414743-01

16.4.5

Output register LED 1 / 2 (read/write, address 404Eh)

Meaning of the bits

Output register LED 1 / 2 (read/write address 404Eh)
Bits

15

14

13 - 8

7

6

5 - 0

1

1

LED L1 / SF dark (default)

1

0

LED L1 / SF lights yellow

0

1

LED L1 / SF lights red (= group fault)

1

1

LED L2 / R/S dark (default)

1

0

LED L2 / R/S lights yellow (= STOP)

0

1

LED L2 / R/S lights green (= RUN)

xxxxxx

xxxxxx

Reserved (read/write)

Note
The L1 and L2 LEDs indicate by flashing alternatively yellow the progress of the BIOS self-

test during the device startup. When the BIOS self-test is completed, the L1 and L2 LEDs go

dark.

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