Omron NT31 NT31C manual Connecting to CS1 Series Serial Communications Board

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

*1 Set any value between 0000 and 0009 Hex for the communications baud rate. The same baud rate will be used regardless of the value as long as it is between 0000 and 0009 Hex.

When connecting PT with its model number 0, 2-5 to the built-in RS-232C port, for example, set the value 8200 Hex to 160 CH, and 0005 Hex to 166CH.

Either set PC Setup directly from a Programming Device (Programming Con- sole), or transmit the PC Setup made at a Programming Device (CX-Program- mer) to the CPU.

For details on PC Setup, refer to the SYSMAC CS1-series Operation Manual (W339-E1-j).

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 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

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 Value	Settings
Port 1	Port 2
DM32000	DM32010	8200	NT link (1:N) mode
DM32001	DM32011	0000 to 0009 (*1)	Communications baud rate
			(standard)
DM32006	DM32016	000j	j = The largest model number of
			the connected PT (0 – 7)

*1 Set any value between 0000 and 0009 Hex for the communications baud rate. The same baud rate will be used regardless of the value as long as it is between 0000 and 0009 Hex.

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