Omron Programmable Terminals NT631C - Manual (Page 269)

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Specifications Appendix A
For an NT Link, 1:N, RS-422A/485
For a High-speed NT Link, 1:N, RS-232C
* 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
For a Memory Link, RS-232C
* When using NT-AL001, specification is as follows:
• RS-232C: Max. 2 m
• RS-422A: Max. total length 500 m
Item Specification
Communications standard EIA RS-422A/485
Connector Terminal block
Number of Units connected 1:1 to 8
Transmission distance Max. 500 m
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
*
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
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