Is it possible to connect the thermistor input to U1 & AI (actuator position 0-10Vdc) to U2 using the same "M" terminal?
TAC Xenta 280
TAC Xenta 300
TAC Xenta 400
All M terminals are internally connected.
There are fewer M terminals than inputs.
Yes, you could use the very same M connection to both inputs, however you should have separate cables connect to M. It is also important that the M connections are only used as reference for inputs, so there are no current in this connection, like you need to have separate connection for powering the actuators.