Siemens SIMATIC IPC427C Operations Instructions Page 147

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Detailed descriptions
16.4 I/O Address Areas
SIMATIC IPC427C
Operating Instructions, 10/2010, A5E02414743-03
147
Meaning of the bits
CAN base address register (write only, address 066h, Address register selection 1)
Bit Description
7 6 5 4 3 2 1 0
0 0 Reserved (Write: 00)
0 1 Reserved (Write:01)
0 0 0 0 40h
. . . . .
. . . . .
1 1 1 1 7Ch
Sets the high byte of the CAN base address
01nnnn00
16.4.5 Output register user LED L1/L2 (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. On completion of the BIOS self-test, the L1 and L2 LEDs go
dark.
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