Omron Programmable Terminals NT31 NT31C - Manual (Page 263)

Appendix A Specifications
253
For a Memory Link , RS-232C Type
Item Specification
Communications standard EIA RS-232C
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, RS/CS, XON/XOFF
Response: Presence/absence
Connector 9-pin D-SUB connector (female) (serial port A)
25-pin D-SUB connector (female) (serial port 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
For a Memory Link , RS-422A Type
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 25-pin D-SUB connector (female) (serial port B)
Number of units connected 1:1
Transmission distance Max. 500 m*
Communications protocol Memory link
For a Bar Code Reader
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]