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A
GFK-2731
Chapter A
A-9
In VersaSafe multiplexer mode, the IC220SDL953 is always assigned one IC220SDL543
with the address xxxxx111 (xxxxx = island number). The IC220SDL953 and IC220SDL543
modules operate with a fixed parameterization.
To differentiate between VersaSafe and VersaSafe multiplexer mode, in VersaSafe mode
the address with "111" in the last three bits is not used. If an address with the format
xxxxx111 is specified in VersaSafe mode, the module enters the safe state.
Therefore, in VersaSafe multiplexer mode, the address xxxxx111 set on the IC220SDL543
corresponds to the setting for VersaSafe multiplexer mode and the island number on the
IC220SDL953.
Table A-6
Example addresses for VersaSafe islands
Addresses for
island number 1
(red in Figure A-2)
Addresses for
island number 2
(green in Figure
Addresses for
island number 3
(blue in Figure
A-2)
Devices
00001 000 (08
hex
)
00010 000 (10
hex
)
00011 000 (18
hex
)
IC220SDL953 (island node)
00001 001 (09
hex
)
00010 001 (11
hex
)
Assigned IC220SDL543/
IC220SDL...
in VersaSafe
mode
00001 010 (0A
hex
)
00010 010 (12
hex
)
Assigned IC220SDL543/IC220SDL... in VersaSafe
mode
00001 011 (0B
hex
)
00010 011 (13
hex
)
Assigned IC220SDL543/IC220SDL... in VersaSafe
mode
00001 100 (0C
hex
)
00010 100 (14
hex
)
Assigned IC220SDL543/IC220SDL... in VersaSafe
mode
00001 101 (0D
hex
)
00010 101 (15
hex
)
Assigned IC220SDL543/IC220SDL... in VersaSafe
mode
00011 111 (1F
hex
)
Assigned IC220SDL543 in VersaSafe multiplexer
mode