Omron Programmable Terminals NT631C - Manual (Page 270)

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Specifications Appendix A
For a Memory Link, RS-422A
For a Bar Code Reader
Item Specification
Communications standard EIA RS-422A
Communications settings Start-stop synchronization
Communications speed: 1200, 2400, 4800, 9600, 19200, 38400 bps
Data length: 7, 8 bits
Stop bit: 1, 2 bits
Parity: None, even, odd
Flow control: None, XON/XOFF
Response: Presence/absence
Connector Terminal block
Number of Units connected 1:1
Transmission distance Max. 500 m*
Communications protocol Memory link
Item Specification
Communications standard EIA RS-232C
Communications settings Start-stop synchronization
Communications speed: 4,800, 9600, 19200 bps
Data length: 7, 8 bits
Stop bit: 1, 2 bits
Parity: None, even, odd
Flow control: RS/CS
Connector 9-pin D-SUB connector (female) (serial port A)
Number of Units connected 1:1
Transmission distance Max. 15 m
Communications protocol Non-protocol mode
Data format
[STX] Data (0 to 40 bytes) [ETX]