Omron DeviceNet CV Series Operation Manual page 256

C200H I/O Link Units
Setting the Read and Write
Areas
1,2,3...
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Read/Write Reference Area
The current setting status of the Read Area and Write Area are indicated as
shown in the following diagram. (The Read/Write Area settings are not output
to this area unless the C200H I/O Link Unit is restarted after software switch
bit 00 is turned ON.)
Bit 15
+ 6
+ 7
+ 8
+ 9
Data is stored in these words in the same form as it is for the Read/Write Set-
ting Area. Refer to page 237 for details.
Use the following procedure to set the Read and Write Areas.
Using Control bits
This procedure uses the Read/Write Setting Area and the software switch in
the C200H I/O Link Unit's Special I/O Area to set the Read and Write Areas.
1. Turn ON the power to the PLC to which the C200H I/O Link Unit is mounted
and set the PLC to PROGRAM mode.
2. Using a Peripheral Device, such as a Programming Console, set the Read
Area and Write Area in the Read/Write Setting Area in Special I/O Area
words +2 to +4. Example: Read Area: IR 100 to IR 119, Write Area: DM
0160 to DM 0189.
+ 1
+ 2
+ 3
+ 4
3. Using the Peripheral Device, turn ON software switch bit 00 in Special I/O
Area word +0 (Read/Write Area user settings). If it is already ON, turn it
OFF and then ON again.
4. Check that Status Area bit 09 in Special I/O Area word +5 is ON (Read/
Write Area Setting Normal Completion Flag).
Note At this point, the Read/Write Area settings are written to memory in
the C200H I/O Link Unit, but they are not yet effective. Operation will
continue using the previous Read/Write Area settings. (The contents
of the Read/Write Reference Area will also remain at the previous
settings.)
5. Reset the C200H I/O Link Unit, or restart the PLC to which the C200H I/O
Link Unit is mounted.
Note a) When the C200H I/O Link Unit is mounted in a C200HX/HG/HE
PLC, it can be reset by turning ON the corresponding Special I/O
Unit Restart Bit in AR 01 or SR 281. When the Unit is mounted in
a CS1H/G PLC, it can be reset by turning ON the corresponding
Special I/O Unit Restart Bit in A502 to A507.
b) When the Unit is restarted, the Read/Write settings will become
effective and the number of IN/OUT words for the C200H I/O Link
Unit will be set.
6. Correct the C200H I/O Link Unit's scan list registration in the Master's scan
list. There are two methods of registering the scan list.
• Turn ON the Enable Scan List software switch on the Master Unit.
Current Write Area setting
Current Read Area setting
Write Area: 58 bytes, DM Area
Write Area: First word address 160
Read Area: 40 bytes, IR Area
Read Area: First word address 100
Section 6-1
Bit 0
239