it seems the 485 bus is not the one communicating with the heating controller, so I would not be able to send any info to the wireless receiver or the controller.
and can see on my scope that there are things happening
(bad picture I know)
I have scoped the a and b lines from the receiver
and the baud rate is 19200
But it should be possible to read from the max485 to newsoftserial, right?
Do I need common ground for 485?
receiver can also be connected via 485 to a pc or other controller