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2 changing the active tool offset {active offset – Rockwell Automation 8520 9/Series CNC Lathe User Manual

Page 82

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Offset Tables and Setup

Chapter 3

3-14

Verify for Maximum Value

This value represents the absolute maximum value per table for all tool

offsets in that table.

If you enter:

then:

a positive number greater than the maximum value

the control generates the error message:

“OFFSET EXCEEDS MAX VALUE”

a negative number less than the negative of the

maximum value

The control does not modify the value in

the table.

Verify for Maximum Change

This change represents the amount an offset may change from its current

value. If you exceed the amount set by the system installer in AMP, the

change is not allowed. The control generates the error message “OFFSET

EXCEEDS MAX CHANGE.”

Use

{ACTIVE OFFSET}

to allow the manual activation of tool offsets,

without the need to program the correct T-word to call the corresponding

offset number. This may be necessary when a broken tool has been

replaced using the Jog Retract feature, or if a program is to start execution

with a tool active in the chuck and no tool offsets programmed, etc.

Typically tool offsets are changed by programming a T-word in a program

as described in chapter 20. This feature should be used only when it is

necessary to activate one of the tool offset numbers manually.

Important: The control must be in either cycle stop or E-Stop states

before an attempt is made to change the active offset using

this method.

If it is necessary to change the current tool offset values or to activate tool

offset numbers without programming a T-word, follow these steps:

1.

Press the

{OFFSET}

softkey.

(softkey level 1)

PRGRAM

MANAGE

OFFSET MACRO

PARAM

QUICK

CHECK

SYSTEM

SUPORT

FRONT

PANEL

ERROR

MESAGE

PASS-

WORD

SWITCH

LANG

3.2

Changing the Active Tool

Offset {ACTIVE OFFSET}