Omron NT631C manual For an NT Link, 1N, RS-422A/485, For a High-speed NT Link, 1N, RS-232C

SpecificationsAppendix A

For an NT Link, 1:N, RS-422A/485

Item	Specification
Communications standard	EIA RS-422A/485
Connector	Terminal block
Number of Units connected	1:1 to 8
Transmission distance	Max. 500 m

For a High-speed NT Link, 1:N, RS-232C

Item	Specification
Communications standard	EIA RS-232C
Connector	9-pin D-SUB connector (female) (serial port A, B)
Number of Units connected	1:1 to 8
Transmission distance	Max. 15 m*

*To connect two or more PTs, NT-AL001 Adapters are required. When using an NT-AL001, the specifications are as follows.

•RS-232C cable: Max. 2 m

•RS-422A/485 cable: Total length 500 m max.

For a High-speed NT Link, 1:N, RS-422A/485

Item	Specification
Communications standard	EIA RS-422A/485
Connector	Terminal block (serial port B)
Number of Units connected	1:1 to 8
Transmission distance	Max. 500 m

For a Memory Link, RS-232C

Item		Specification
Communications standard	EIA RS-232C
Communications settings	Start-stop synchronization
	Communications speed:	1200, 2400, 4800, 9600, 19200, 38400bps
	Data length:	7, 8 bits
	Stop bit:	1, 2 bits
	Parity:	None, even, odd
	Flow control:	None, RS/CS, XON/XOFF
	Response:	Presence/absence
Connector	9-pin D-SUB connector (female) (serial port A, B)
Number of Units connected	1:1
Transmission distance	Max. 15 m*
Communications protocol	Memory link

* When using NT-AL001, specification is as follows:

• RS-232C:	Max. 2 m
• RS-422A:	Max. total length 500 m

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