RedLotus Posted September 22, 2011 Report Share Posted September 22, 2011 Hi, I am using a Jazz JZ-10-11-R10 PLC in my application. I intend to use the serial port to communicate modbus with a modem. The problem is that the modem has a DB9 Female on board and a serial cable (RS-232) DB 9 Male/Female was provided with it in the box. Can I use this configuration to build my cable? Modem side (D type 9-pin Male) PLC side RJ11 Controller Signals DSR(out) 6 <--> 1 PWR(in) RTS(in) 7 <--> 2 GND GND 5 <--> 3 RXD(in) RXD(out) 2 <--> 4 TXD(out) TXD(in) 3 <--> 5 GND GND 5 <--> 6 PWR(in) DCD(out) 1 <--> I would very much appreciate it if someone could answer my question. Thank you very much. Best Regards, JM Quote Link to comment Share on other sites More sharing options...
MVP 2014 Simon Posted September 23, 2011 MVP 2014 Report Share Posted September 23, 2011 I would strongly recommend contacting your local distributor and purchasing an MJ10-22-CS76 adaptor, which will do what you need. It should be possible to build your own cable, but I have rarely seen it go smoothly. Quote Link to comment Share on other sites More sharing options...
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