Beckhoff Slice Type
Bit Width
Denominator Lower
Value
Denominator Upper
Value
Denominator Value
EL4034
16
-65535
65535
131070
EL3002
16
-65535
65535
131070
RapidPath supports up to ten probe signals. The probe signals should be mapped to the corresponding I/O point in the
control configuration. Any of the Beckhoff I/O points can be used as probe inputs. If a probe is wired into a servo drive
directly, then it must be wired into latch inputs on all drives or must also be wired into a Beckhoff I/O.
The basic Probe signal corresponds to the gcode G31. All subsequent probe signals correspond to G31.#, where # is
their probe index. For example, the Probe9 signal is gcode G31.9.
1. On the menu bar, click Configure -> Control, then select the Input Signals tab.
2. Scroll to the probe signal you want to map an I/O point to. The available probe signal names are:
Probe
Probe1
Probe2
Probe3
Probe4
Probe5
Probe6
Probe7
Probe8
Probe9
3. Enable the probe signal by checking the box for Mapping Enabled.
4. Select the Device that owns the I/O point from the drop down.
5. Select the Input Name from the drop down.
6. Check the Active Low box if the input is wired active low. This means the signal will be active when the I/O
point is low. This is commonly used as a safety mechanism for probe inputs.
7. If multiple probes are in use on the machine, give the signal a User Description that describes which probe
the signal represents. This description will be used throughout the control. If no description is given, the
signal name will be used.
8. Press Apply to save any changes and OK to close the configuration window.
9. On the menu bar, click Configure -> Plugins -> RapidPath, then select the Drives tab.
10. For each motor, select G31.# Probe Input probe source
If the probe signal is mapped to a Beckhoff I/O, select Motion Controller
If the probe is wired directly to the front of this motor, select the corresponding Probe Input #
11. Press Close to close the configuration window.
Probing
It is not recommended to wire probe inputs to the latch signals on the servo drives.
It is highly recommended to use a Beckhoff I/O for probe inputs and use the Motion Controller probe source
for all motors.
