DB9 9-Pin RS232 to RS485 Passive Adapter Converter ตัวแปลง RS-232 to RS-485

DB9 9-Pin RS232 to RS485 Passive Adapter Converter ตัวแปลง RS-232 to RS-485 RS232 to RS485 Passive Adapter Converter Specification - Compatibility: EIA/TIA RS232C standard and RS485 standard. - Interface RS232 side: DB9 female connector. - Interface RS485 side: DB9 male connector with optional terminal board. - Working mode: asynchronous, half-duplex, differential transmission. - Transmission rate: 300 - 115200bps - Recommended transmission media: twisted pair or shielded twisted pair. - Mechanical dimensions: 95mm x 33mm x 17mm - Working environment: 0 ~ 70C, relative humidity 5% - 95% - Transmission distance: RS485 max. 1200m, RS232 side max. 5m RS232C Connector Definition RS485 Connector Definition DB9 Pin No. RS232C Signal 1 DCD 2 RXD 3 TXD 4 DTR 5 GND 6 DSR 7 RTS 8 CTS 9 RI Pin No. DB9 Male Terminal Board 1 D-/B D+/A 2 D+/A D-/B 3 - GND 4 - +5V ~ +12V 5 GND - 6 +5V ~ +12V - 7 - - 8 - - 9 - -