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I've read three threads on the forums related to RS-485/MODBUS control of the V-Green pump motors. Based on those, I was encouraged to give it a try. I bought an inexpenive 422/485 USB adapter for testing, and downloaded the terminal program with macro support that @MSchutzer used. Initially, I...

I installed a large lap pool in 2007. It's still going strong but there are some issues that have always plagued it that I'm interested in fixing. Currently, I'd like to automate the pool pump run speed and time using my sprinkler controller, a microcontroller, and a ttl to rs-485 interface.