Com1/Com2 Rs232/Rs422/Rs485 Select - DFI SB601-C User Manual

2
Hardware Installation

COM1/COM2 RS232/RS422/RS485 Select

JP1 (for COM1) and JP2 (for COM2) are used to confi gure the COM ports to
RS232, RS422 (Full Duplex) or RS485.
The pin function of the COM ports will vary according to the jumper's setting.
2
1
1-2 On: RS232
(default)
1 2 3 4 5
6 7 8 9
RS232
32
COM 2
COM 1
4 6
3 5
JP1 JP2
JP1/JP2
2 4 6
1 3 5
3-4 On: RS422
Full Duplex
COM 1 / COM 2
1 2 3 4 5
6 7 8 9
RS422
Full Duplex
COM 2
COM 1
2 4 6
1 3 5
5-6 On: RS485
1 2 3 4 5
6 7 8 9
RS485