TMC Probe Part Option

Renshaw OMP40-2 Optical Machine Probe Manual

Renshaw OMI-2T Manual

31551_TMC Service Manual

34050-2_PROBE-CAT40-TMC

34080-10_RECEIVER ASSY-OMI-2T

34080-1_PROBE-OMP40-2

34080-5_STYLUS-PROBE-100MM

The OMP40-2 probe communicates using infrared optical transmission, requiring a direct line of sight (LOS) to the OMI-2T receiver at all times.

Code 124 – Probe Part Calibration

• Used to calibrate the part probe.

Code 521 – Hardware Tester

• Used for probe I/O, enable, trigger, and fault verification.

Before beginning Service Code 124 calibration, confirm that the probe and software are correctly configured.

• Run Code 318 and ensure Part Probe Option is active.
• In the STATUS window, confirm PART PROBE = YES under Options Activated.

• Ensure the PROBE tool description appears in the top status bar when active.
• Verify the correct LIB #, TOOL TYPE, and OFFSET values display.
• Confirm the Probe tool has a Library # assigned in the Tool Table.
• Delete any ATC tools without a defined LIB # and re-add them as needed.

Check that OMP40-2 settings match TRAK standards for switch-off method, trigger filter, and transmission power.

Renishaw offers a mobile app to assist with probe setup:

Apple App Store: Renshaw Probe Set-Up App

Google Play Store: Renshaw Probe Set-Up App

• Use a flat head screwdriver to remove the battery cover from the OMP40-2 probe.
• Take out the batteries, wait 5 seconds, then reinstall them and secure the cover.
• Do not allow coolant or debris to enter the battery compartment.
• Watch for the LED to flash red, then green, then blue.
• When the blue LED appears, deflect and hold the stylus to enter configuration mode.
• Do not remove the batteries while the probe is in configuration mode.
• To exit configuration mode, leave the stylus untouched for 20 seconds.
• Battery status will flash: 8 red = good, red + blue = low.

• While still holding the stylus deflected, the switch-off method will be displayed via LED flashes.
• Release the stylus when you see two red flashes followed by a long red flash.
• To cycle through switch-off options, deflect and release the stylus quickly (1 second).
• When the correct setting is shown, deflect and hold the stylus for 4+ seconds to continue.
• The trigger filter menu will display as two green flashes followed by a long red flash.
• Deflect and release the stylus to cycle through available trigger filter options.
• When the correct setting appears, deflect and hold the stylus for 4+ seconds.
• The probe will automatically move to the next configuration menu.

• The optical transmission method menu will display.
• If the probe flashes a color other than blue, deflect and release the stylus (1 second) to cycle through settings.
• Once the probe flashes only blue, deflect and hold the stylus for 4+ seconds to confirm.
• The optical power setting menu will now appear.
• Deflect and release the stylus until you see two yellow flashes followed by a long red flash.
• Leave the stylus untouched for 20+ seconds to save and exit configuration mode.

Use Service Code 521 (Hardware Tester) to verify that the probe and related inputs/outputs are functioning correctly.

In normal operation, the probe will not power on unless the software detects it is loaded in the spindle. This is to preserve probe battery life.

• This behavior does not apply when using the Hardware Tester (Service Code 521), since ProtoTRAK software is not controlling probe power.

1. Enter Service Code 521 on the pendant.

• Save and close any open work when prompted.
• Press [Connect]— the “Not Connected” box should disappear.
• Select the correct machine from the dropdown menu.
• There may be up to a 10-second delay before the tester is ready.

2. Prepare the control for probe testing:

In the right-most Inputs/Outputs column, select:

• [NC Ready]
• [NC Ready 2]

This should cause the NC Ready State 1 and NC Ready State 2 indicators (blue circles) to light.

If they do not light, ensure the [E-STOP] is released, then press and hold the [POWER RESET] button until both indicators are lit.

(Selecting Motion Allowed is optional — only required if you plan to move an axis.)

3. Enable the probe:

• Select [Probe 1 Enable (P54)].
• Expected behavior:
  • Probe Error (Active Low – P68-5) → Enabled (filled circle) = No error.
  • Probe LED blinks green.
  • Receiver LEDs: 1 green LED on the left, 2 green LEDs below (communication OK).

4. Trigger the probe:

• While the probe is enabled, deflect the probe stylus by hand.
• Expected behavior:
  • Probe Error (P68-5) remains enabled.
  • Probe Trigger 1 (P68-2) and Probe Trigger 2 (P68-3) enable (filled circles) while deflected, then return to inactive when released.

To reset the probe deselect [Probe 1 Enable (p54)], wait 5–10 seconds, then reselect it. This reinitializes the probe.

• Verify that the spindle tool-detect sensor triggers properly when the probe is loaded.
• In normal ProtoTRAK software operation, the probe uses the spindle tool-detect signal as a power-saving feature. The probe will only turn on when the tool-detect sensor confirms the probe is properly loaded in the spindle.
• This restriction does not apply when using the Hardware Tester (Service Code 521), since ProtoTRAK software is not controlling probe power.

If [Probe 1 Enable (P54)] is selected and the probe battery is removed or the receiver cannot see the probe:

• Receiver LEDs will show: 1 green LED on the left, 3 red LEDs across the bottom.
• Probe Error (P68-5) will deactivate (empty circle) → fault condition.
• Probe triggers will not respond.

Before You Begin

• Complete XYZ laser calibration and backlash adjustments.
• Confirm Service Codes 123 and 128 have been performed.

• Set the machine to Metric Mode.
• Ensure the machine is in PRODUCTION OPS mode.
• Ensure the probe tool has a defined Library Number.
• Keep the Feed Rate Override = 100% when running the service code.
• Run the service code with the door closed.
• Always insert the probe in the same orientation relative to the spindle dogs.
  • Calibration values depend on the angle at which the probe triggers.
  • Measuring in a different orientation than calibration will cause significant inaccuracies.

1. Install both the probe and optical receiver.

• Have the ring gage and dial indicator ready.

2. Perform Stylus Runout Adjustment.

• Load the OMP40-2 into the spindle.
• Mount a dial indicator to the table and contact the stylus tip.
• Rotate the spindle by hand to check runout.
• Adjust the lower four flat screws in opposing pairs to reduce runout.
• Adjust the upper two pointed screws to fine-tune.
• Repeat lower & upper screw adjustments as needed.
• Target Calibration: ±0.0001".

3. Check probe stability.

• Perform the runout check with a non-probe tool active in the DRO to avoid triggering the probe.
• Use only the first 0.001"–0.002" of indicator travel to avoid stylus deflection.
• After adjustment, switch DRO back to the probe tool.
• While the indicator is still on the tip, push on the lower portion of the probe body (LED section, not the stylus).
• The indicator should deflect and return exactly to zero run-out. Test in multiple directions.
• If it does not consistently return, tighten the tool holder or other set screws until stable.

4. Place the ring gage in the vise and tighten finger tight (≈10 in-lbs).

5. Use the dial indicator on the spindle to locate exact XY center of the ring gage within 0.0001".

• Set X and Y zero here.

6. Run Service Code 124 for XY calibration.

• Determine the exact ring gage size to 0.001 mm (use marked size, do not measure).
• Nominal stylus diameter = 6.000 mm (0.2362").

7. While running Service Code 124, ensure:

• The machine is in PRODUCTION mode.
• The probe tool is active in the DRO.
• The spindle will orient during the calibration cycle.

Note: Not being in PRODUCTION mode will cause a fault.

8. After calibration, save the values.

• The system checks all 12 measured points (30° intervals).
• Each must be between 0.001 mm and 0.200 mm.
• Failure likely means probe tip run-out or incorrect XY zero.

9. In DRO, obtain a plastic shim (~0.010").

• Mic the center for accuracy (avoid burrs on edges).
• Lower Z over a flat reference surface (table, vise, or 1-2-3 block).
• Adjust until probe tip is just above the surface by shim thickness.
  • If drag is felt, raise slightly.
• Set Z to shim thickness in DRO.
• Adjust in 0.0001" increments.

Note: If no shim is available, use a gage block or 1-2-3 block.

10. Being 0.0001–0.0002" too high is acceptable.

Being too low will cause calibration failure.

• Probe typically triggers at 0.005–0.020 mm in Z.
• Z values must be between 0.005 mm and 0.200 mm.

11. Raise head ≈6 mm (0.25") and run Z calibration with SC 124.

• Monitor Z on DRO — the lowest number seen should be negative.
• If not negative, calibration will fail.

12. Save Z values.

13. XY Check:

• In DRO, use CENTER/CIRCLE function multiple times.
• Verify with dial indicator — center should be within:
  • ±0.0001" to ±0.0002" depending on accuracy of procedure.

14. Z Check:

• Mount a dial indicator on the spindle base, contacting the reference surface.
• Use the probe to touch the surface.
• Move Z up/down, probing the surface each time.
• Indicator should repeat within 0.0002" (0.005 mm).

• Any error in calibration will be reflected in all future probe measurements.
• If another active probe is nearby and its transceiver can “see” your machine’s transceiver, errors may occur. The software should detect and warn.