Omron NT631C manual Setting Switches on a C200HX/HG/HE-ZE Communications Board

Connecting to the Host’s RS-422A/485 Port Section 5-2

Connecting to a CPM2C

The CPM2C PLCs do not have the same kind of port connectors found on CS/ CJ-series PLCs. The CPM2C’s communications 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 con- nections, 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-CN111CPM2CCS1W-CN114CPM2C

RS-232C port	Peripheral port
(D-Sub 9-pin, female)

Setting Switches on a C200HX/HG/HE(-Z)E Communications Board

Set the switches on a C200HX/HG/HE(-Z)E Communications Board as fol- lows.

Switch 1:	4 (4-wire = RS-422A)
Switch 2:	ON (terminator ON = terminating resistance enabled)

Setting Switches on a CQM1H Serial Communications Board

Set the switches on a CQM1H Serial Communications Board as follows. 2-wire or 4-wire selector (WIRE): 4 (4-wire = RS-422A)

Terminating resistance switch (TERM): ON (terminator ON = terminating resistance enabled)

Serial Communications Board (Inner Board slot 1)

Terminator Switch (TERM)

Set to ON (right side).

Wire Selection Switch (WIRE)

Set to 4 (right side).

Setting the Switches on an RS-422A Adapter

CPM1-

CIF11 CPM1

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:

CS1W-SCB41(-V1) (The port 2 is an RS-422A/485 port.)

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