Lisa or Sapien,
Still the script and cable are not working. It must be a wiring issue but I cannot find it.My questions
I now see 3 versions of the wiring. 1) the original post, 2) a post from bejdehanz on Monday 11 July 2016 19:11 and 3) a different one as posted as a photo by Lisa (https://lh3.googleusercontent.com/EqB25f6djRFhKwtvZPrPtrP0xotuGgmdapcC1e7xS_5moHkW8kx-_4UD3SQtSh0_bNJfWFBdew=w1920-h1080-no
). Which to choose? This has also NEVER be confirmed.-
Do I require the 12 volt on pin 1 or not? Using the wiring scheme as listed below, using the RJ45-to-RS232 cable, and this connected to my RS232-to-USB is not recognized by my PI. No ttyUSB0 device is available. With my RS232-to-USB only this cable is recognized by my PI but in combination the script from Sappien gives issues and also results in a NC error on my Comfosense (control unit in the living room).
I really would like to get this project to work but without any help I will not succeed.
Please respond.On Thursday 11 August 2016 18:35 lisa wrote:Cable wired like this:
rj45 pin 2 -> rs232 pin 3
rj45 pin 3 -> rs232 pin 2
rj45 pin 8 -> rs232 pin 5
Cable verified using multimeter, all connection are good.
Neither RS232 (plugged into MB rs232) nor Serial2USB is working.
Can anyone please help?
Use a multimeter to verify that the connections are correct (use my wiring, so crossing 2->3 and 3->2). The 12V is NOT needed, forget it!
Make sure you didn't shortcircuit any pins (like by mistake connecting pin 2 and 3 on the rs232 since they are tiny).
Make sure the rj45 is realy IN the comfosense socket and not almost (making no connection).
Post cable foto's here (of the rj45 and rs232, with visible wires so we can check).
Run op the PI:
- dmesg | grep -i tty
(mine: [ 3.617497] usb 5-1.1: pl2303 converter now attached to ttyUSB2)
Check config file
(mine: Ventilation = ZehnderWHR930('/dev/ttyUSB2'))