Siemens Sinumerik 840D Operating Turning page 296

Section 4
Notes
B523
B523
Tool wear
Parameter Meaning (continuation)
Tool life (T) Tool life
Quantity (C) Number of workpieces
Wear (W) Tool wear
The wear monitoring is configured via a machine data
item. Please refer to the machine manufacturer`s in-
structions.
Set val Setpoint value for tool life, workpiece count, or wear.
Prewar limit Prewarning limit:
Specification of the tool life, workpiece count or wear
at which a warning is displayed.
Note:
If the adjusted rest life of the tool, the number of
changes or the wear is reached, the tool will be dis-
abled.
This tool will not be selected for the next tool change.
If present, an adequate sister tool will be used in-
stead.
The monitoring refers in each case to the selected
cutting edge.
It is possible to reactivate a disabled tool.
D Single tools can also be disabled by hand, if these
tools are not in use anymore or if the tools life ran off.
The tool is disabled if the checkbox is activated.
4.4 Icons in the tool wear list and their meaning
(See section 3.3, Icons in the tool list, in this module)
4.5 Entering the tool wear or disabling a tool
1. Press the "MENU SELECT"-key on the operator
panel, then the HSK 2 "Parameter" and the HSK 2
"Tool wear" to switch to the tool wear list.
2. Enter values for length, radius, setpoint, prewarning
and tool life.
- OR -
2. Activate the "D"-parameter checkbox for disabling
the tool manually.
The tool is now disabled.
Page 32 840D/828D SINUMERIK Operate