
17.REAL-TIME CUSTOM MACRO PROGRAMMING B-63944EN/02
- 530 -
- Reference position return
A movement is made at the rapid traverse rate to the first reference
position on a specified axis. Upon completion of reference position
return, the return completion lamp is turned on.
Format
// ZDO ;
G91 G28 IP 0 ;
ZEND ;
G91 : G code for incremental command
IP 0 : Specify an axis on which reference position return is to
be performed.
Be sure to specify 0 as the travel distance.
NOTE
1 Only one axis can be specified in one block.
2 No intermediate point may be specified. (Be sure
to specify 0 as the travel distance. Otherwise, P/S
alarm 410 is issued.) If a movement needs to be
once made to an intermediate point, specify
positioning with rapid traverse (G00)/machine
coordinate system selection (G53) then specify this
command.
3 The absolute command (G90) cannot be specified.
4 When using this function, be sure to set bit 0 (RPD)
of parameter No. 8002 to 0.
5 Before this command can be specified, a reference
position must be established. (With this command,
do not specify an axis on which a reference
position is not established.)
6 Before specifying this command with the T series,
cancel tool offset and tool-nose radius
compensation. Before specifying this command
with the M series, cancel cutter compensation, tool
length compensation, and tool offset.
- Rapid traverse override
With bit 2 (OVE) of parameter No. 8001, whether to use the
rapid traverse override signal for an NC statement or the rapid
traverse override signal dedicated to PMC axis control can be
chosen.
NOTE
Even if bit 4 (RF0) of parameter No. 1401 is set to
1, rapid traverse does not stop with a cutting feed
override of 0%.