Memory Allocations; Cio Area Allocation - Omron CP1H CPU Operation Manual

Memory Allocations

9-9 Memory Allocations
9-9-1

CIO Area Allocation

Service Status
!Caution Bit 15 is used for detect power condition of PLC, so do not change it at any
6. After entering the correct values, click the Transfer Button to transfer the
settings to the Ethernet Option Board.
7. To enable the new settings, turn the power to the Ethernet Option Board
OFF and ON again, or click the Restart Button.
The memory allocation about communication services status in the CIO area
of PLC is shown as the following diagram. The beginning CIO channel m is
calculated by the following equation:
m = CIO2980 + 10×(0xFD - Unit Address)
Offset D15
m Service Status
m+1 Error Status
m+2 FINS/TCP Connection Status
The following table describes the unit address for each option port.
Option Port No. I/O Capacity
Option port 1 14/20
30/40/60
Option port 2 30/40/60
15 14 13 12 11 10
m 1 0 0 0
Bit Name
0 to 13 Reserved
14 Link Status
15 Reserved
time. Otherwise the CP1W-CIF41 Ethernet Option Board will generate error.
Unit Address
0xFC
0xFD
0xFC
9 8 7 6 5 4
0 0 0 0 0 0 0
Unit operation
Always 0.
0: The link between hubs is terminated.
1: A link is established between hubs.
Always 1.
Section 9-9
D0
Range of Status Area
CIO2990 to CIO2992
CIO2980 to CIO2982
CIO2990 to CIO2992
3 2 1 0
0 0 0 0
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