Mitsubishi Electric C80 Series Instruction Manual page 258

C80 Series Instruction Manual
5 Setting a Tool and a Workpiece
(5) Select a tool.
Set the selected tool compensation No. in R register.
The set R register differs according to parameter set-
ting and the state of the tool presetter sub-side valid
signal. Set the "tool length/wear data" for the tool be-
ing used beforehand.
(6) Cut the workpiece face.
If the workpiece does not need to be cut, carry out
positioning to the measurement position.
(7) Input the workpiece measurement signal (Y9E1).
<Details on automatic calculation expression>
The workpiece coordinate system shift value is automatically calculated with the following expression:
When the parameter "#8709 Ext work sign rvs" is set to "0":
Workpiece coordinate system shift amount = Machine coordinate value - Tool compensation data
When the parameter "#8709 Ext work sign rvs" is set to "1":
Workpiece coordinate system shift value = -(Machine coordinate value - Tool compensation data) * (-1)
Select the tool compensation data used for the measurement with the parameter "#1226 aux10/bit0".
#1226 aux10/bit0
0
1
<Compensation No. of selected tool>
The compensation number of the tool length and nose wear data used for automatic calculation is determined by the
PLC ladder.
<Note>
When the compensation No. is 0, the compensation amount will be calculated as "0".
If the compensation No. exceeds the number of specified offset sets, the operation message "Offset No. not
found" appears. However, when the setup workpiece coordinate system shift screen is not displayed, the mes-
sage will not appear.
If the input data exceeds the setting range, the operation message "Data range error" appears. However, when
the setup workpiece coordinate system shift screen is not displayed, the message will not appear.
If the data protection is valid, the operation message "Data protect" appears. However, when the setup work-
piece coordinate system shift screen is not displayed, the message will not appear.
Measurement is disabled for the part system with one-axis structure. The operation message "Can't measure"
is displayed. However, when the setup workpiece coordinate system shift screen is not displayed, the message
will not appear.
Whether to use the main side or sub-side is selected with the tool presetter sub-side valid signal (YCDA). (OFF:
Main side, ON: Sub-side)
Set the compensation No. in R register by the BCD code.
(8) Set the tool length measurement signal to OFF.
Select the tool compensation data used for the mea-
surement with the parameter "#1226 aux10/bit0".
Precautions
(1) When the automatic setting is carried out for the workpiece coordinate system shift value without displaying the setup
workpiece coordinate system shift screen, the message is not displayed even if an error occurs.
Issue the T command by MDI operation, etc., then select
tool.
If the workpiece face is not cut, cut the workpiece face
slightly to even it.
Do not move the tool in the Z axis direction after cutting
the workpiece face.
Input the workpiece measurement signal. The Z axis ex-
ternal workpiece coordinate offset data is automatically
calculated from the tool compensation data of the used
tool and the machine value at the point this signal is in-
put. The results are set as the data.
Tool compensation data
Tool length data + nose wear data
Tool length data
The measurement of the workpiece coordinate system
shift value is completed.
233 IB-1501453-C