17 Ethernet Option Board
17-30
CP1E CPU Unit Software User’s Manual(W480)
The memory allocation about communication services status in the CIO area of PLC is shown as the
following diagram. The range of the CIO area is CIO80 to CIO82.
Precautions for Correct UsePrecautions for Correct Use
Bit 15 is used for detect power condition of PLC, so do not change it at any time. Otherwise the
CP1W-CIF41 Ethernet Option Board will generate error.
17-4-2 CIO Area Allocation
Offset D15 D0
CIO 80 Service Status
CIO 81 Error Status
CIO 82 FINS/TCP Connection Status
Service Status
Bit Name Unit operation
0 to 13 Reserved Always 0.
14 Link Status 0: The link between hubs is terminated.
1: A link is established between hubs.
15 Reserved Always 1.
CIO 80
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
1 00000000000000
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