Hello,
where can we find any documentation about the RS485 for Touchberry 10.1 with RTC+UPS+RS485 model?
It has the M8 connector, the middle of the three pins is connected to the supply ground, so I assumed that other two pins are A and B for RS485.
But no matter what I tried, I could not get any modbus RTU device to do anything.
List of devices I tried:
/dev/tty
/dev/tty0
/dev/tty1
/dev/ttyS0
/dev/ttyAMA0
/dev/ttyprintk
I have also tried to swap the A and B.
The exact same modbus RTU command works on other devices with the USB-to-RS485 dongle.
Please help.
