
14.PMC CONTROL FUNCTION B-63783EN-1/01
- 1430 -
Axis control
command
(hex code)
Operation
Skip--feed per minute
13h
Performs the same operation as "G31 G01" for the CNC.
Continuous feed (exponential acceleration/deceleration)
16h
Continuously feeds the tool along the controlled axis in a
fixed direction.
Performs the same operation as continuous feed in JOG
mode for the CNC.
1st. reference position return
17h
Performs the same operation as movement to the
reference position from the "G28" intermediate point for the
CNC.
2nd. reference position return
18h
Performs the same operation as movement to the
reference position from the "G30 P2" intermediate point for
the CNC.
3rd. reference position return
19h
Performs the same operation as movement to the
reference position from the "G30 P3" intermediate point for
the CNC.
4th. reference position return
1Ah
Performs the same operation as movement to the
reference position from the "G30 P4" intermediate point for
the CNC.
External pulse synchronization--main spindle
1Bh
Synchronizes with the main spindle.
- Rapid traverse rate
When rapid traverse is specified (CDxX7 to CDxX0: 00h), the rapid
traverse rate to be used can be selected with bit 2 (RPD) of parameter
No. 1409. RPD specifies whether the rapid traverse rate used is set to
the same feedrate as in the CNC which is set in parameter No. 1420 or
set to the feedrate set by FDxX15 to FDxX0 of the PMC axis interface
independently of the CNC.
- Machine coordinate system selection
When machine coordinate system selection (CDxX7 to CDxX0: 06h)
is specified, the tool moves at a rapid traverse rate to a position
specified in the machine coordinate system in absolute mode. Use this
command when the tool is to be moved to a position defined
specifically for the machine such as the tool change position.
A short-cut command cannot be specified for a rotation axis.
Before specifying machine coordinate system selection, cancel cutter
compensation, tool length compensation, and tool offset.
Since the machine coordinate system must have been set when the
command is specified, a manual reference position return or a reference
position return by G28 must be performed once after the power is
turned on. When an absolute-position detector is installed, the machine
position is stored, so that reference position return after power-up is not
needed.