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by Suncatcher1
Sun, 14 Jun 2020, 10:39
Forum: Renewable Energy and Storage (Non-EV)
Topic: PIP-4048MS and PIP-5048MS inverters
Replies: 2787
Views: 711873

Re: PIP-4048MS and PIP-5048MS inverters

Hi. I'm having trouble to connect with my inverter with the com board. I used pin 1 and 2 for tx and rx and 8 for ground. But it doesn't want to connect via a USB RS232 adaptor. What is the problem to connect it straight to the 6 pins connector on the board? Why is the opto coupler so important? I b...