Renishaw TONiC T20x1 REXM20 Installation Manual page 33

Ultra-high accuracy angle encoder system
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Selecting a new reference mark output position (propoZ)
The position of the reference mark output (propoZ) can be set by the user and can be reprogrammed as many times as required.
Ensure the DSi is calibrated and has completed the initialisation routine before setting a new reference mark output position.
The LED on the DSi flashes 'blank' as it passes the last programmed propoZ position.
Changing the propoZ position
1. Rotate the axis to the required reference (index) position.
2. Using a hex-key or other suitable tool, press the recessed propoZ button on the front of the DSi. The LED on the DSi will show orange while the button is
pressed. The new propoZ position is stored as the button is released. If the axis remains at that position, the LED shows blank after the button is released,
indicating that the axis is at the propoZ position.
NOTE: You may find it useful to press and hold the propoZ button while you adjust the axis position slightly, then release the button at the optimum point.
3. The controller may now 'emergency stop' as the reference (index) is output at a new position. The controller should be restarted to ensure it is using the
new reference (index) position.
4. After the controller has been restarted, the DSi will start the initialisation routine, indicated by a flashing green LED on the DSi and a 'low' initialisation
status, 'K'. Rotate the axis in one direction (either clockwise or anti-clockwise) until the LED goes solid green and the initialisation status, 'K' goes 'high'.
The new propoZ position will be indicated by a blank flash of the LED.
NOTE: You can select a new propoZ position at any time when the LED is solid green, simply by pressing the propoZ button.
5. Small black adhesive covers are provided for the propoZ button and head orientation switch to reduce ingress of dust.
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