© 2020 Vital Systems, Inc
20
Troubleshooting
Most error messages can be viewed in the history log of Mach4 and can indicate problems with the configuration
or the runtime operation.
The system disarms when calling the M3 command
Cause
Solution
One of the THC settings may be bad.
Review the THC settings on the ArcPro screen and make
sure that the
[THC On]
is enabled and mapped to a
digital input on the motion controller.
The
[ArcOK]
or
[DIGITIZE]
signal is
currently active.
Check the Mach4 Input signal mapping, and make sure
that the polarities (Active Low/High), are set to the
correct values. Inspect the wiring and make sure that
the LEDs on the Arc Pro screen toggle properly.
The controller was busy executing another
motion sequence.
In most scenarios, this error shouldn’t occur. Check the
GCode File or MDI command being executed before the
M3 command.
The probe move reached the indicated
limit without detecting the digitize signal.
Check that the
[Digitize]
signal in Mach4 is mapped to
the correct digital input, and that the
[Digitize]
signal
toggles correctly by checking the signal state in the
diagnostic tab on the Mach4 screen.
The THC feature is currently not activated
on the unit.
Please contact the vendor of your unit, or Vital System
Inc.
NOTE: It is also recommended to go
through the
connecting the digitize sensor to the
motion controller.
NOTE: Please follow the proper setup instructions for wiring, Mach4
configuration, and the setting the on-screen THC parameters before attempting
any tests.
