Omron CPM1A Operation Manual page 93

Wiring and Connections
One-to-N Host Link
Connection
RS-422
Adapter
70
The following diagram shows the wiring in the RS-232C cable used to connect a
CPM1A 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
The type of connector used will vary depending on the PT. Check the PT manual
to ensure the correct connector is used.
Note When the CPM1A is connected to a host computer or OMRON PT, set the
RS-232C Adapter's mode setting switch to "HOST."
Up to 32 CPU Units can be connected to an IBM PC/AT compatible computer
with a 3G2A9-AL004-E Link Adapter and RS-422 Adapters, as shown in the fol-
lowing diagram.
RS-232C cable
Link Adapter
3G2A9-AL004-E
RS-422 cable
RS-422
Adapter
CPM1A
CPU Unit
Pin No.
1
2
3
4
5
6
7
8
9
RS-422
Adapter
CPM1A
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
CPM1A
CPU Unit