Omron NT31 NT31C manual Allocation DM Area Settings for CPU, PC Setup

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

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 execution of the STUP command.

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

			m=DM30000+100⋅unit # (CH)
Allocation DM area (CH)		Writing Value	Settings
Port 1	Port 2
m	m+10	8000	host link mode, 2 stop bits, even parity, data
			length 7 bits
m+1	m+11	0000	Communication speed 9600 bps.
		0007	Communication speed 19200 bps.
m+2	m+12	0000	Transmit delay time 0 ms.
m+6	m+16	0000	No CTS control Unit No.0 for host link

Connecting to a CPU Unit

CV-series and CVM1/CV-series (-EVj) CPU Units

•CV500-CPU01-EV1/CV1000-CPU01-EV1/CV2000-CPU01-EV1

•CVM1-CPU01-EV2/CVM1-CPU11-EV2/CVM1-CPU21-EV2

PC Setup

When connecting to a CVM1/CV series CPU, set the following communication conditions for the PC Setup.

Item	Setting at Host
Communications speed	Set the same speed as set at the NT31/NT31C(*1)
Stop bit	2 stop bits
Parity	Even
Data length	ASCII 7 bits
Unit #	00

*1 Set the host link communications speed at 9600 bps or 19200 bps with the memory switch at the NT31/NT31C. For details, refer to Setting the Host Link Method (page 160).

Either set PC Setup directly from a Programming Device (e.g. SYSMAC support software), or transmit the PC Setup made at a Programming Device to the CPU.

For details on the PC Setup, refer to the SYSMAC CVM1/CV500/1000/2000 Op- eration Manual: Ladder Diagrams (W202-E1-j).

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