- Nov 8, 2021
I assume the signal pins operate at the same voltage though? Or does that sound dumb.The JK converter is most likely an isolation device. This is a safety device that makes sure the power from the battery has no way to get the the RS485 bus and on to your PC/GX. Most isolation devices use a opto chip. Essentially a man on either side of the river showing flags to the guy on the other bank, and that man talks on the phone to relay the message.
If they use different voltage then they cannot hurt each other.
It's the same reason you don't connect the V+