Rockwell Automation 8520-ARM2 9/Series CNC AMP Reference Manual Documentation Set User Manual

Page 687

Tuning AMP at the Machine

Chapter 40

40-9

Move the axis to the next position and press the

{INSERT POINT}

softkey.

Important: The maximum interval between consecutive axis calibration

points is 84 inches (2133.6 mm).

If the first point is the most negative position on the axis, the control

reading is displayed on the following line in the ABSOLUTE

column.

If the first point inserted was not the most negative position, the first

point is shifted down by one line and the control reading of the

current position will be displayed on the first row in the

ABSOLUTE column.

Press the

[REPLCE VALUE]

key and enter the difference between the

control reading and the actual axis position, then press the

[TRANSMIT]

key. The difference cannot be greater than 2% of the

distance between this point and the previous one. If it is the message

“PARAMETER OUT OF RANGE” appears.

Important: Put a negative sign on the difference if the actual axis position

is on the negative side of the absolute axis position.

Enter the actual reading using the operator panel keyboard, then press

the

[TRANSMIT]

key. The actual reading is displayed in the

MEASURE column.

Repeat steps 3 and 4 until the entire axis has been calibrated.

To store data, press the

{UPDATE & EXIT}

softkey.

After the entire axis has been calibrated, assuming the difference and

most negative position have been selected for the input data type and

the start point, the display will look like the Axis Calibration Screen

shown in Figure 40.2.

Important: If the displayed axis was a roll-over axis, which would be

indicated by the “ROLL OVER” display to the right side of the axis name

on row 3, the net amount of correction values for the axis must be zero for

one complete revolution. If a control operator tries to leave the screen of a

roll-over axis by pressing the

{UPDATE & EXIT}

softkey, or the

{NEXT AXIS}

softkey when the net amount for the axis is not equal to zero,

the error message: “NET CORRECTION IS NOT ZERO” is displayed in

row 0.

Press the

{EXEC}

softkey to leave the screen with the error, or press

the

{CANCEL}

or the

{--}

softkey to stay in the screen.