A--43
Micro Programmable Controller
CPM1A
1:N Host Link Communications
CPM1A-V1
CPU
RS-422
Adapter
CPM1A-V1
CPU
RS-422
Adapter
CPM1A-V1
CPU
RS-422
Adapter
Response
Command
Computer with a
RS-422/RS-485
communications port
J
1:1 CONNECTIONS FOR DATA EXCHANGE
With a 1:1 Link, two CPM1As or a CPM1A and CQM1 or C200H
j
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
Link bits
WRITE area
READ area
LR 00
LR 07
LR 08
LR 15
WRITE
READ
READ area
WRITE area
LR 00
LR 07
LR 08
LR 15
READ
WRITE
Link bits
CPM1A-V1 CPU
RS-232C Adapter
CPM1A-V1 CPU
Communication Cable C200H-CN320-EU (2 m), CBL-804*
RS-232C Adapter
Master
Slave
* Available in Canada only.
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 C200H
j
side
when forming 1:1 links with a CQM1 or C200H
j
.
