Omron NT631C manual CPU Unit Allocation DM Area Settings

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

Reference: CS-series Serial Communications Boards and Units with lot number 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 Unit 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 Unit. After the setting is written, it becomes effective by turning the power ON, restarting the Unit, restarting the communications port, or execu- tion of the STUP command.

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

Allocated DM Area words		Setting	Setting Contents
Port 1	Port 2
DM32000	DM32010	8200	1:N NT Link Mode
DM32001	DM32011	000A	Baud rate (standard)
DM32006	DM32016	000@	@ = The highest unit number of the con-
			nected PTs (0 to 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 CS/CJ-series Serial Communications Unit

A CS/CJ-series Rack-mounting Unit: CS1W-SCU21(-V1),

CJ1W-SCU21(-V1)/41(-V1)

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

Setting the Front Switches

Set the unit number of the Serial Communications Unit by using the rotary switch located on the front panel. Set each switch with a flat blade screwdriver so that the values or symbols in the setting value window agree with the fol- lowing.

SCU21

RUN	RDY
ERC	ERH
SD1	SD2
RD1	RD2

UNIT		F
No.	10
	32
	4
	56789

Set the unit number to 0 through F so that it will not overlap with the numbers used in other units.

Allocation DM Area Settings for CPU Unit

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 Unit. After the setting is written, it becomes effective by turning the power ON, restarting the Unit, restarting the communications port, or execu- tion of the STUP command.

In the following table, the channel numbers of the allocation DM area and set- tings are shown.

72