Omron NT21 - SETUP MANUAL 10-2001 Setup Manual page 87

Connecting to the Host's RS-422A/485 Port
76
Connecting to a CPM2C
Only the CPM2C PCs do not have the same kind of port connectors found on
CS/CJ-series PCs. The CPM2C's communication port handles both RS-232C
and peripheral port connections, which are divided internally. Therefore, when
using the CPM2C, it is necessary to select RS-232C or peripheral port connec-
tions, according to the kind of cable and port (on the cable) used, as shown in the
following table. Refer to the CPM2C Operation Manual for more details.
Peripheral port
CPM2C-CN111
RS-232C port
(D-Sub 9-pin, female)
Setting Switches on a C200HX/HG/HE(-Z)E Serial Communications Board
Set the switches on a C200HX/HG/HE(-Z)E Serial Communications Board as
follows.
Switch 1: Set to 4 (4-wire, for RS-422A)
Switch 2: Set to ON for terminator ON (terminating resistance applied)
Setting Switches on a CQM1H Serial Communications Board
Set the switches on a CQM1H Serial Communications Board as follows.
Wire selection (WIRE): Set to 4 (4-wire, for RS-422A)
Terminator (TERM):
Setting the Switches on an RS-422A Adapter
Set the terminator selector switch to ON (upper position).
Connecting to a CS-series Serial Communications Board
Serial Communications Board with RS-422A/485 port equipped for CS-series
CPU Unit Model:
CS1W-SCB41 (The port 2 is RS-422A/485 port.)
CPM2C
CS1W-CN114
Peripheral port
Set to ON for termination ON.
Serial Communications Board
(Inner Board slot 1)
Terminator Switch (TERM)
Set to ON (right side).
Wire Selection Switch (WIRE)
Set to 4 (right side).
Section 5-1
CPM2C
CPM1-
CIF11
CPM1