Omron Programmable Terminals NT631 Setup Manual page 268

Specifications
For a Host Link, RS-422A
Item
Communications standard
Communications settings
Connector
Number of Units connected
Transmission distance
Communications protocol
For an NT Link, 1:1, RS-232C
Item
Communications standard
Connector
Number of Units connected
Transmission distance
* When using an NT-AL001, the specifications are as follows.
• RS-232C cable:
• RS-422A cable:
For an NT Link, 1:1, RS-422A
Item
Communications standard
Connector
Number of Units connected
Transmission distance
For an NT Link, 1:N, RS-232C
Item
Communications standard
Connector
Number of Units connected
Transmission distance
* To connect two or more PTs, NT-AL001 Adapters are required. When using an NT-AL001, the specifications
are as follows.
• RS-232C cable:
• RS-422A/485 cable:
EIA RS-422A
Start-stop synchronization
Communications speed:
Data length:
Stop bit:
Parity:
Terminal Block (serial port B)
1:1
Max. 500 m
C-series SYSWAY (1:N)
EIA RS-232C
9-pin D-SUB connector (female) (serial port A, B)
1:1
*
Max. 15 m
Max. 2 m
Total length 500 m max.
EIA RS-422A
Terminal block (serial port B)
1:1
Max. 500 m
EIA RS-232C
9-pin D-SUB connector (female) (serial port A, B)
1:1 to 8
*
Max. 15 m
Max. 2 m
Total length 500 m max.
Specification
9600, 19200 bps
7 bits
2 bits
Even
Specification
Specification
Specification
Appendix A
251