- Before you use the probe on tools or parts.
- After a crash, or when you replace the probe.
- Work probe 
- OMI sensor 
- Tool probe 
Operate this code in MDI mode:
When the control shows PROGRAM END, lightly tap the stylus  of the tool probe with your finger. The control makes a "beep" each time you touch the stylus. This starts the probe operation program.
Operate this code in MDI mode:
Hold the work probe  near the OMI sensor .
Lightly tap the stylus  of the work probe. The control makes a "beep" sound. This tells you that the probe is started.
Put the work probe into the spindle.
Put the indicator onto the table. Align the indicator tip to the probe stylus  as shown.
Jog the spindle in 0.0001" increments until the indicator  touches the stylus. Set the indicator to 0.
Turn the spindle with your hand to measure the work probe runout. If the runout is more than 0.0001" (0.025 mm), do Step 2.
If the runout is more than 0.0001" (0.025 mm), do these steps to adjust the work probe stylus:
- Loosen the (2) top locking set screws  on the spindle probe. These screws lock the stylus in position. Lightly tighten them again.
- Loosen the (4) bottom set screws  a small amount. These screws adjust the position of the stylus.
- Turn the spindle with your hand until you find the highest indicator reading. This tells you which direction to adjust the stylus to decrease runout.
Tighten the bottom screws  on the high side. As you tighten these screws, loosen the bottom screws on the opposite side  to allow the stylus to move.note: Very small adjustments have a large effect on the stylus runout.
- Adjust the screws until the runout is less than 0.0001" (0.025 mm).
- Tighten these screws equally:
- the top locking screw
- the bottom adjustment screw on the opposite side
Put the calibration bar  into the spindle.
Use the indicator to measure the runout of the calibration bar.
If the runout is more 0.0001" (0.025 mm), adjust or replace the calibration bar.
If you have recorded the length of the calibration bar, do Step 2.
Do these step to measure the length of the calibration bar:
- Put the tip of the indicator against the bottom face  of the calibration bar. Set the indicator to 0.
In MDI mode, jog the X Axis until the indicator is no longer under the calibration tool.
Jog the Z Axis in the negative (-) direction until the tip of the indicator touches the bottom face  of the spindle.
- The Z-Axis value on the DIST TO GO position is the calibration bar length. Record this value.
- Use a micrometer to measure the diameter of the widest part of the calibration bar. Record the measurement.
Select the TOOL PROBE CALIBRATION tab.
Jog the Z Axis until the calibration bar  is 0.40" (10 mm) above the tool probe .
Do these steps to align the calibration bar to the tool probe:
- Jog the X Axis until the calibration bar is aligned with the tool probe.
Jog the Y Axis until the calibration bar is aligned with the tool probe.
Enter this information for the calibration bar:
- the tool number 
- the bar length 
- the bar diameter 
The Calibration Box shows COMPLETED.
Attach the ring gauge  to the table near the tool probe.
Move the calibration bar  above the edge of the ring gauge.
Put a shim, feeler gauge, or slip of paper  over the gauge.
Measure the thickness of the shim used. For example, a piece of paper at 0.003 inch.
Select the WORK PROBE CALIBRATION tab.
Put the work probe  into the spindle.
Measure the length  of the work probe. Enter the length of the work probe.
Enter the diameter of the ball at the end of the work probe. For the standard Renishaw probe, use 0.2362" (6 mm).
Measure the inside diameter of the ring gauge. Use an inside micrometer or a bore gauge. If the inside diameter is written on the gauge, use that number.
The calibration box shows COMPLETED.