Avalue EBM-BYT - Manual (Page 23)

User’s Manual
EBM-BYT User’s Manual 23
2.3.9 Serial port 1 connector (COM1)
RS-232 Mode
Signal PIN PIN Signal
NDCDA#_485TXN 1 6 NDSRA#
NRXDA_485TXP 2 7 NRTSA#
NTXDA_485RXP 3 8 NCTSA#
NDTRA#_485RXN 4 9 NRIA#
GND 5
RS-422 Mode
Signal PIN PIN Signal
485TXN 1 6 NC
485TXP 2 7 NC
485RXP 3 8 NC
485RXN 4 9 NC
GND 5
RS-485 Mode
Signal PIN PIN Signal
485TXN 1 6 NC
485TXP 2 7 NC
NC 3 8 NC
NC 4 9 NC
GND 5