Omron NT31 NT31C manual Using the NT Link 11 Method Compatible Host Units, CVM1-CPU21-EV2

Connecting to the Host’s RS-422A/485 Port					Section 5-2
	Allocation DM
	area (CH)	Writing Value		Settings
	Port 2
	DM32010	8000	Host link mode, 2 stop bits, data length 7 bits,
			even parity,
	DM32011	0000	Communication speed		9600 bps.
		0007	Communication speed		19200 bps.
	DM32012	0000	Transmit delay time		0 ms.
	DM32016	0000	No CTS control	Unit No.0 for host link

Using the NT Link (1:1) Method

Compatible Host Units

Some models and series of OMRON PCs have the RS-422A type NT link (1:1) function built in.

•The C200HX/HG/HE(-Z)E CPUs can be connected by the RS-422A type NT link (1:1) method by installing a Communications Board.

•The CQM1H CPUs can be connected by the RS-422A type NT link (1:1) meth- od by installing a Serial Communications Board.

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

The host units that can be connected to the RS-422A port of the NT31/NT31C by the RS-422A type NT link (1:1) method are indicated in the table below.

PC Series		CPUs with Built-in RS-422A type NT	Model Name
		Link (1:1) Function
		C200HE-CPU32-(Z)E(*1)	C200HE (-Z)E
		C200HE-CPU42-(Z)E(*1)
		C200HG-CPU33-(Z)E(*1)
		C200HG-CPU43-(Z)E(*1)	C200HG (-Z)E
		C200HG-CPU53-(Z)E(*1)
		C200HG-CPU63-(Z)E(*1)
C series		C200HX-CPU34-(Z)E(*1)
		C200HX-CPU44-(Z)E(*1)
		C200HX-CPU54-(Z)E(*1)	C200HX (-Z)E
		C200HX-CPU64-(Z)E(*1)
		C200HX-CPU65-ZE(*1)
		C200HX-CPU85-ZE(*1)
		CQM1H-CPU51/61	CQM1H
CV series		CV500-CPU01-EV1	CV500
		CV1000-CPU01-EV1	CV1000
(*22)
		CV2000-CPU01-EV1	CV2000
CVM1		CVM1-CPU01-EV2
		CVM1-CPU11-EV2	CVM1
series (*2)
		CVM1-CPU21-EV2
*1	One of the following communication boards is required:
	C200HW-COM03-EV1 or C200HW-COM06-EV1.
*1	A CQM1H-SCB41 Serial Communication Board is required.
*1	CPUs of CVM1/CV series PCs without the suffix -EVjcannot be connected.

The NT link (1:1) method cannot be used using RS-485. To use the NT link (1:1) method, connect by RS-422A.

NT link connection using RS-422A/485 is not possible with CPM1.

Settings at the Host

The setting methods for each type of unit are described in the following.

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