Service Home How To Procedures Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset - CHC

Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset - CHC

4.5 Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset - CHC

Last updated: 08/12/2025

Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset - CHC

Revision A 08/2025

Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset

1

If the machine has a gearbox, operate this code in MDI mode:

M41;

This puts the machine in low gear and makes the spindle easier to turn with your hand.

Make sure no tool is in the spindle. Make sure no tool is in the pocket that faces the spindle.

Push [EMERGENCY STOP].

2

Go into DEBUG mode

Push [POSIT].

Select the VAR tab [1].

 Note: If you have software version 15.xx or earlier, navigate to the VAR tab.

Push [WRITE/ENTER]

Select the RAW DATA tab [2].

Turn the spindle dogs with your hand. Turn until the SPINDLE POS [3] value is between 0 and 2000. Make the value as near as possible to 0.

3

Attach the spindle lock tool (T-1635). This tool aligns the spindle dogs.

 Caution: Make sure the SPINDLE POS value stays between 0 and 2000. If the value is not accurate, you will crash the machine.

Enter the SPINDLE POS value into Parameter 257.

Exit DEBUG mode.

4

Remove the Spindle Lock Tool (T-1635).

Test the spindle orientation:

  1. Put a tool in the spindle.
  2. Go to MDI mode.
  3. Push [ATC FWD].
  4. Push [ATC REV].

Make sure the machine has a smooth tool change.

If the machine does not does not have a smooth tool change, the machine has (1) of these conditions:

Umbrella Tool Changer - Set Parameter 257 - Spindle Orientation Offset - Service

Introduction

This procedure tells you how to set Parameter 257 (Spindle Orientation Offset) on a machine that has an umbrella tool changer.

This procedure is only for service technicians. For customers, use the procedure above which does not go into debug mode.

Tools Required

  • Spindle Lock Tool T-1635

1

If the machine has a gearbox, operate this code in MDI mode:

M41;

This puts the machine in low gear and makes the spindle easier to turn with your hand.

Make sure no tool is in the spindle. Make sure no tool is in the pocket that faces the spindle.

Push [EMERGENCY STOP].

2

Go into DEBUG mode

Push [POSIT].

Select the VAR tab [1].

 Note: If you have software version 15.xx or earlier, push [PAGE UP] or [PAGE DOWN] to go to the VAR tab.

Push [WRITE/ENTER].

Select the RAW DATA tab [2].

Turn the spindle dogs with your hand. Turn until the SPINDLE POS [3] value is between 0 and 2000. Make the value as near as possible to 0.

3

Attach the spindle lock tool (T-1635). This tool aligns the spindle dogs.

 Caution: Make sure the SPINDLE POS value stays between 0 and 2000. If the value is not accurate, you will crash the machine.

Enter the SPINDLE POS value into Parameter 257.

Exit DEBUG mode.

4

Remove the Spindle Lock Tool (T-1635).

Test the spindle orientation:

  1. Put a tool in the spindle.
  2. Go to MDI mode.
  3. Push [ATC FWD].
  4. Push [ATC REV].

Make sure the machine has a smooth tool change.

If the machine does not does not have a smooth tool change, the machine has (1) of these conditions: