Tic encoder position flipping between 0 and -1


i’m using serial position control with a Tic834 connected to a stepper.
every 20 msec a serial message arrives to tell the Tic at which position the stepper should be.
when the stepper is moving and also when it’s at the required position, in the Tic control center the ‘encoder position’ is constantly flipping between 0 and -1.
there are no errors reported.

is this normal behavior, nothing to worry about?

rolf meesters

Yes, this is normal behavior when using the serial interface. The Tic uses its RX and TX lines as encoder inputs, so the encoder position will be nonsensical when using the serial interface (which uses the same pins).