Thông số Kỹ thuật CHIYU BF-431 :HardwareEthernet Interface10/100Base-T,half/full duplexSignal PortRS232/485/422RS232 SignalTxD, RxD, RTS, CTS, DTR, DSR, DCD, GND, Baud Rate:1200bps~230.4kbpsRS485 Signal2 wire Data+/- (only for BF-430)RS422 Signal4 ...