Avalue EAX-Q77 - Manual (Page 25)

EAX-Q77 User’s Manual
EAX-Q77 User’s Manual 25
2.6.3 Serial Port 1 Signal Select Jumpers (JRS1/JRS2/JRS3)
JRS1
Signal PINS Signal
RXD232 1 2 RD1
RXD 422 3 4 RD1
RXD 485 5 6 RD1
RS232
(Default)
RS422 RS485
JRS2
Signal PINS Signal
RS485_B 1 2 RS485_A
NDCD1_D- 3 4 NRXD1_D-
NDCD1- 5 6 NRXD1-
JRS3
Signal PINS Signal
RS422_B 1 4 NTXD1_D-
RS422_A 2 5 NDTR1-
NDTR1_D- 3 6 NTXD1-
RS422/RS485 RS232
RS422 RS232