Delta RMC101 User Manual download pdf (Page 87)

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101

Basic Topics 3.4

Using RMCWin 3-37

7. Under First position, click Use Current, which copies the COUNTS on this axis being calibrated

to the Counts box under First position. You can also manually type a value in this box, but it is

easiest to use the Use Current button.

8. Move the axis to the second point. You may want to move the Scale/Offset Calibration dialog

box out of the way so that you can use the main RMCWin window.

9. Measure the physical distance to the second point on the axis in the position units that you intend

to use.

10. Under Second position, in the Actual position box, type the distance measured to the second

point in position units.

11. Under Second position, click Use Current.

12. Under Extend/Retract Limits, choose how you wish to have the limits set:

• If you had the extend and retract limits set correctly, click Use current limits, adjusted for

new Scale and Offset to adjust the limits for your new Scale and Offset.

• If the points you used for the two positions are your limits, click Set limits to above

positions.

• Otherwise, click Set limits to the following values and type the limits in the text boxes.

13. Click Apply, which sets the Scale, Offset, the Prescale Divisor bits of the Configuration word,

Extend Limit, and Retract Limit.

14. Click Done.

15. Issue a 'P' command for the axis to have the new parameters take affect.

3.4.20.3 MDT Scale/Offset Calibration Utility

For a description of all Scale/Offset Calibration Utilities, see Using the Scale/Offset Calibration

Utilities. To use the MDT Scale/Offset Calibration Utility:

1. Gather the following pieces of information for an axis:

• The gradient of the transducer and its units (e.g. 9.012µs/inch)

• The number of recirculations for the transducer

• The desired number of position units per inch or centimeter

• The transducer counts at your desired zero position

• Whether you wish to have your position units increase or decrease with increasing counts

2. Place the cursor in a field under the axis you wish to calibrate.

3. On the Tools menu, click MDT Scale/Offset Calibration.

4. Enter the above pieces of information.

5. Under Extend/Retract Limits, choose how you wish to have the limits set:

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