Automatically Setting The Workpiece Coordinate System Shift Value - Mitsubishi Electric C80 Series Instruction Manual

C80 Series Instruction Manual
5 Setting a Tool and a Workpiece
<Details on formula>
The measurement result is calculated in the following formula.
When the parameter "#8709 Ext work sign rvs" is set to "0":
Measurement result = (Machine position of Z axis) - (Tool length compensation data of T-command tool) - (Input value)
When the parameter "#8709 Ext work sign rvs" is set to "1":
Measurement result = (Machine position of Z axis) - (Tool compensation data of T-command tool) * (-1) - (Input value)
Select the tool compensation data used for the measurement with the parameter "#1226 aux10/bit0".
#1226 aux10/bit0
0
1
Note
(1) If the parameter "#11017 T-ofs set at run" (Tool compensation amount setting during automatic operation enabled) is
set to "1", the tool compensation amount data can be input in the automatic operation mode or operation pause mode.
(2) If you press the menu [Measure] while the axis name designated in the input section is different from that pointed at the
cursor, the operation message "Setting error " is displayed.

5.9.2 Automatically Setting the Workpiece Coordinate System Shift Value

Carry out the automatic setting for the workpiece coordinate system shift value using the workpiece measurement signal.
The PLC device is set to the value of the 1st part system. For information on how to carry out automatic setting in another
part system, refer to the PLC Interface Instruction Manual.
Operation method
(1) Carry out the reference position return.
If the workpiece is measured without establishing the
reference position return, the operation message
"Meas axis not returned to ref. position" appears.
However, when the setup workpiece coordinate sys-
tem shift screen is not displayed, the message will
not appear.
(2) Select the mode.
(3) Input the tool measurement mode signal (YC21).
(4) Select the main or sub part system.
IB-1501453-C
Tool compensation data
Tool length data + nose wear data
Tool length data
After the power is turned on, carry out the dog-type ref-
erence position return, and establish the coordinate sys-
tem.
In the absolute position detection specification, config-
ure the initial setting in advance if the absolute position
is not established.
Set the mode selection switch to the manual mode (han-
dle, jog, rapid traverse, or step).
Set the tool length measurement signal to "1". "On mea"
is displayed on the setup workpiece coordinate system
shift screen.
Select whether to measure the workpiece coordinate
system shift value on the main spindle side or sub-spin-
dle side by using tool presetter sub-side valid signal (YC-
DA).
Hold the status of this signal until the workpiece coordi-
nate system shift value measurement with the selected
tool is completed.
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