Set up is two four relay / 4 input V4.0 boards with no jumpers on the first board and the second board has the RS485 terminator and ID0 jumpers fitted.
I am using Qmodmaster to control the boards.
I am able to turn on and read the coil status from a single board, but when I attached the second board I get check sum errors and the relay on the second board mirrors the relay status of the first.
I also tried running Modpoll to scan. That also only sees one device and then gives "Illegal Data Address exception response!"
Is there anything else I need to configure ?
I am using Qmodmaster to control the boards.
I am able to turn on and read the coil status from a single board, but when I attached the second board I get check sum errors and the relay on the second board mirrors the relay status of the first.
I also tried running Modpoll to scan. That also only sees one device and then gives "Illegal Data Address exception response!"
Is there anything else I need to configure ?