Omron NT31 NT31C 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 PCs do not have the same kind of port connectors found on CS1-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 connections, according to the kind of cable and port (on the cable) used, as shown in the fol- lowing table. Refer to the CPM2C Operation Manual for more details.

Peripheral port

CPM2C-CN111 CPM2C CS1W-CN114CPM2C

Peripheral port

RS-232C 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 communication board as follows.

Switch 1: Set to 4 (4-wire type, for RS-422A)

Switch 2 : Set to ON for terminator ON (termination 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 type, for RS-422A)

Terminator (TERM):	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).

Setting the Switches on an RS-422A Adapter

CPM1-

CIF11 CPM1

Set the terminator selector switch to ON (upper position).

Connecting to a CS1 Series Serial Communications Board

Serial Communications Board with RS-422A/485 port equipped for CS1 series

CPU Type :

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

Allocation DM Area Settings for CPU

Settings are written from the Programming Device (a Programming Console or CX-Programmer) directly into the allocation DM area (system setting area) of the CPU. After the settings are written, they become effective by turning the power ON, restarting the unit, restarting the communication port, or executing the STUP command.

In the following, the channel numbers of the allocation DM area and the settings are shown.

110