Rockwell Automation 8520-MUM 9/Series CNC Mill Operation and Programming Manual Documentation Set - Manual (Page 505)

Tool Control Functions
Chapter 20
20-21
2. Distance - This is selected by choosing 2 as the type of tool life
measurement. Distance measures tool life as the distance that the tool
has been moved using a cutting feedrate. The value for the expected
tool life is entered in units of inches or millimeters depending on the
mode that the control is operating in at the time. For multi-axis
moves, the vectorial distance traveled by the tool is the distance used
for tool life measurement.
The tool life type (selected as either 0, 1, or 2) is selected on a per-group
basis. Different groups may use different tool life types however each tool
in the group uses the same tool life type.
Tool life Threshold Percentage
A threshold level may also be assigned to a tool group. The threshold level
is assigned as a percentage of the total expected life of the tool. When a
tool reaches this threshold level it is classified as old for that tool group. A
tool is classified as old only to allow the operator to see that a tool is close
to expiration. If the tool is being used when it reaches the threshold level it
will continue to be used as normal until the tool reaches the “expired state”
(100% of the expected tool life). If the tool life has reached the “expired
state” when cutting a part, the control will continue to use the tool until the
operator executes a tool change operation.
The tool life threshold percentage is selected on a per-group basis.
Different groups may use different threshold percentages however each
tool in the group uses the same threshold percentage.
Entering Tool Group Data
To enter tool group data it is first necessary to create the tool groups. This
is done automatically when the group is selected to edit. To enter tools
into groups and enter other tool group data 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