I’d go back and concentrate on the TSCL & TSUC signals. I think you may be seeing them at times but they may not be occurring as expected. If the control is not seeing it within 3 seconds, it’s not likely the signal is there. When the alarm occurs does it happen immediately or does it take 3 seconds after the command before it occurs?
There is no m code for positioning it is done with the G152.
Best regards,