RS485 pins

[hellracer13]

Hi, I would like to make this work on ESP32. I was able to get it compiled but I am not sure of GPIO vs RS485 and pentair controller.

ESP32 GPIO 45, 46 as RX/TX

45 to 485 TXD
46 to 485 RXD

RS485 A+ to green pump (lower left)
RS485 A- to yellow wire pump (lower center)

No COM??

Thanks, will publish the example once it work...

[hellracer13]

Also pin 6,7 are pin of what exactly? arduino or Pump?

tks!

[Zuntara]

Hi,

It's been a while since the creation of this library, but if i remember correctly:

• Pins 6 and 7 are the pins on the pump connector . So your Arduino or ESP, has some GPIO pins that he will use towards a rs485 shield i guess (in your case) , those need to be configured in de code

• then the outputs of the shield must go to the pins 6 and 7 of your pump.

Then it should give some sign of life :) - before connecting you can check it with an oscilloscope whether the signal goes over the line within the expected voltage range of your RS485 shield to avoid blowing it up.

Good luck ;)