Omron NT31 NT31C manual Connecting to CS1 Series Serial Communication Board, Connection to Word #

Connecting to the Host’s RS-422A/485 Port					Section 5-2
		Connection to	Word #	Writing Value	Setting
	Port A of a C200HX/		DM6555	5j00	Use NT link (1:N)
	HG/HE(-Z)E*1				j = highest unit number of the
					connected PTs (1 to 7)*3
	Port 2 of a CQM1H*2		DM6550	5j00
*1		The Communications Board’s RS-422A/485 port
*1		The Serial Communications Board’s RS-422A/485 port
*1		When using C200HE(-Z)E, the maximum PT unit number is 3.

For details on setting the PC Setup area settings, refer to the PC’s operation manual.

Reference: S There are no Serial Communication Boards for the C200HX/HG/HE(-Z)E in which port B is the RS-422A/485 port.

SThere are no Serial Communication Boards for the CQM1H in which port 1 is the RS-422A/485 port.

Setting the DIP Switches on a C200HX/HG/HE(-Z)E Communication Board

Set the switches on a C200HX/HG/HE(-Z)E communication board as follows.

Switch 1: Set to 4 (4-wire type, for RS-422A), or

Set to 2 (2-wire type, for RS-485)

Switch 2 : Set to ON for terminator ON (termination resistance applied)

Setting Switches on a CQM1H Serial Communications Board

Set the switches on a CQM1H Serial Communications Board as follows.

Wire selection (WIRE): Set to 4 (4-wire type, for RS-422A) or

Set to 2 (2-wire type, for RS-485)

Terminator (TERM): Set to ON for termination ON.

Serial Communications Board

(Inner Board slot 1)

Terminator Switch (TERM)

Set to ON (right side)

Wire Selection Switch (WIRE)

When using RS-422A: Set to 4 (right side) for 4-wire type.

When using RS-485: Set to 2 (left side) for 2-wire type.

Connecting to CS1 Series Serial Communication Board

Serial Communications Board with RS-422A/485 port equipped for CS1 series

CPU type :

CS1W-SCB41 (The port 2 is RS-422A/485 port.)

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