Omron CPM1A Manual page 22

1:N Host Link Communications
Computer with a
RS-422/RS-485
communications port
RS-422
CPM1A-V1
Adapter
CPU
J 1:1 CONNECTIONS FOR DATA EXCHANGE
With a 1:1 Link, two CPM1As or a CPM1A and CQM1 or C200Hj are connected 1:1 with one side as the Master and the other as the
Slave to provide an I/O link of a maximum of 256 points (LR 0000 to LR 1515).
Example of a 1:1 Link between CPM1As
Communication Cable C200H-CN320-EU (2 m), CBL-804*
RS-232C Adapter
CPM1A-V1 CPU
Link bits
LR 00
WRITE WRITE area
LR 07
LR 08
READ area
READ
LR 15
Limitations of the CPM1A 1:1 Link
CPM1A I/O links are limited to 16 words (LR 00 to LR 15). Therefore, use these 16 words (LR 00 to LR 15) on the CQM1 or C200Hj side
when forming 1:1 links with a CQM1 or C200Hj.
RS-422
CPM1A-V1
Adapter
CPU
Master
* Available in Canada only.
RS-422
CPM1A-V1
Adapter
CPU
RS-232C Adapter CPM1A-V1 CPU
Slave
Link bits
LR 00
READ area
LR 07
LR 08
WRITE area
LR 15
Micro Programmable Controller
READ
WRITE
CPM1A
A--43