Omron NT31 NT31C manual Connecting to a 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 switch 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 connection of RS-232C devices.)

RS-232 port

This is used mainly for connection of RS-232C devices.

(This also supports the connection of 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 a CS1 Series Serial Communications Board

Serial Communications Board equipped with a RS-232C port for CS1-series CPU Units: CS1W-SCB41/21

Reference: Serial Communications Boards and Serial Communications Units with lot num- ber 991220 (12/20/99) and later support the high-speed 1:N NT Link. Boards and Units with earlier lot numbers cannot be used.

CPU Allocation DM Area Settings

Setting is 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 setting is written, it becomes 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 settings are shown.

Allocation DM area (CH)		Writing	Settings
Port 1	Port 2	Value
DM32000	DM32010	8200	NT link (1:N) mode
DM32001	DM32011	000A	Communications baud rate (high-speed)
DM32006	DM32016	000j	j = The largest model number of the
			connected PT (0 – 7)

For example, when connecting PTs with model numbers 3, 4, 5, and 6 to port 1, set the value 8200 Hex to DM32000, 000A Hex to DM32001, and 0006 Hex to DM32006.

Connecting to a CS1 Series Serial Communication Unit

A CS1 series backplane mounted type : CS1W-SCU21

Reference: Serial Communications Boards and Serial Communications Units with lot num- ber 991220 (12/20/99) and later support the high-speed 1:N NT Link. Boards and Units with earlier lot numbers cannot be used.

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