Com 1 Rs232/422/485 Select; Com 1 Signal Select - DFI TPC121 User Manual

COM 1 RS232/RS422/RS485 Select
JP1 (for COM 1) is used to configure the COM port to RS232, RS422 (Full Duplex) or RS485.
The pin function of the COM ports will vary according to the jumper's setting.
JP1
2 4 6 2 4 6
1 3 5 1 3 5
3-4 On: RS422
1-2 On: RS232
Full Duplex
(default)
COM 1
1 2 3 4 5 1 2 3 4 5
6 7 8 9
6 7 8 9
RS422
RS232
Full Duplex
Chapter 4 Jumper Settings
Chapter 4
JP1
2 4 6
1 3 5
5-6 On: RS485
1 2 3 4 5
6 7 8 9
RS485

COM 1 Signal Select

JP3
2 4 6 2 4 6
1 3 5
1 3 5
1-3 On: Pin-9 3-5 On: Pin-9
is RI (default) is VCC (+5V)
JP3 (for COM 1) is used to configure pin 1 and pin 9 signal of the COM port. The pin function
of the COM ports will vary according to the jumper's setting.
28
2 4 6 2 4 6
1 3 5
1 3 5
2-4 On: Pin-1 4-6 On: Pin-1
is DCD (default) is VCC12 (+12V)
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