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The following diagram shows the possible methods for a connection between a
CPM1A PC and an OMRON Programmable Terminal (a operator interface
device).
OMRON Programmable Terminal
RS-232C Cable
CPM1A CPU Unit
RS-232C Adapter
One-to-N Communications The following diagram shows how to connect up to 32 CPM1A PCs to an IBM
PC/AT or compatible computer.
IBM PC/AT or compatible
RS-232C Cable
RS-422 Cable
3G2A9-AL004-E
Link Adapter
CPM1A CPU UnitsRS-422
Adapters
OMRON CPM1A PCs
(32 PCs max.)
The maximum cable length of RS-422 should be 500 m.
Connecting to a
Programmable Terminal
System Configuration
Section 1-2