Omron SYSMAC CPM1 Operation Manual page 59

Wiring and Connections
1:n Host Link Connection
RS-422
Adapter
The following diagram shows the wiring in the RS-232C cable used to connect a
CPM1 to a host computer or Programmable Terminal.
IBM PC/AT compatible computer
or Programmable Terminal (9-pin)
Signal
CD
RD
SD
ER
SG
DR
RS
CS
CI
Note When the CPM1 is connected to a host computer, set the RS-232C Adapter's
mode setting switch to "HOST."
Up to 32 CPU Units (CPM1 only) can be connected to an IBM PC/AT compatible
computer or a Programmable Terminal with a B500-AL004 Link Adapter and
RS-422 Adapters, as shown in the following diagram.
Link Adapter
3G2A9-AL004-E
RS-422
CPM1
Adapter
CPU Unit
Pin No.
1
2
3
4
5
6
7
8
9
RS-422
CPM1
Adapter
CPU Unit
Section 3-4
RS-232C Adapter
Pin No. Signal
1/Cover FG
2 SD
3 RD
4 RS
5 CS
–
6
7 –
8 –
9 9 SG
CPM1
CPU Unit
43