Omron NT31 NT31C manual Connecting to CS1-series Serial Communications Board

Connecting to the RS-232C Port at the Host Section 4-1

Setting the Front Switches

Set the CPU DIP switches to 4 or 5 in accordance with the port NT31/NT31C is connected to.

Peripheral port

This is used mainly for connection to the Programming Device. (This also supports the RS-232C unit connection.)

RS-232 port

This is used mainly for connection to the RS-232C unit.

(This also supports the CX-Programmer.)

RUN

ERR/ALM

INH

PRPHL/COMM

SYSMAC CS1G

PROGRAMMABLE CONTROLLER CPU42

OPEN

MCPWR BUSY

OPEN

PERIPHERAL

PORT

DIP switches (inside the battery storage)

•Set SW4 to ON (establishing communication in ac- cordance with PC Setup) when connecting the NT31/NT31C to the peripheral port.

•Set SW5 to OFF (establishing communication in ac- cordance with PC Setup) when connecting the NT31/NT31C to the RS-232C port.

Connecting to CS1-series Serial Communications Board

Serial Communications Board equipped with a RS-232C port for CS1-series

CPU Units: CS1W-SCB41/21

Allocation DM Area Settings for CPU Unit

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 execution of the STUP command.

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

Allocation DM area (CH)		Writing Value	Settings
Port 1	Port 2
DM32000	DM32010	8000	Host link mode, 2 stop bits, even parity, data
			length 7 bits
DM32001	DM32011	0000	Communication speed 9600 bps.
		0007	Communication speed 19200 bps.
DM32002	DM32012	0000	Transmit delay time 0 ms.
DM32006	DM32016	0000	No CTS control Unit No.0 for host link

When Using the NT Link (1:1) Method

Compatible Host Units

Some models and series of OMRON PCs have the NT link (1:1) function built in. With CQM1H PCs, a Serial Communications Board can be added to provide 1:1 NT Link communications. Some C200HX/HG/HE(-Z)E CPUs can be connected by the NT link (1:1) method by installing a Communication Board.

Check the model and series of the PC against the type of CPU before making the connections.

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