
9.SPINDLE FUNCTION B-63783EN-1/01
- 844 -
Canceling spindle positioning
To cancel spindle positioning mode and enter spindle rotation mode,
specify Mzz in a program.
zz must be set in parameter No. 5681 in advance. A sequence pattern is
set in parameter No. 5895.
1. Suppose that Mzz is specified in a program.
2. One of miscellaneous function code signal M0 to M31 is sent, and
at the same time, miscellaneous function strobe signal MF is set to
1.
This transmission procedure is the same as that for ordinary
miscellaneous functions.
3. When strobe signal MF is set to 1, the PMC reads the code signal.
After confirming that the code signal is zz, the PMC must respond
with an appropriate operation. In this case, however, no particular
operation is required. The PMC must present completion signal
FIN for miscellaneous function strobe signal MF from being set to
1 until the operation procedure explained below is completed.
When the spindle is stopped, the PMC sets spindle stop
confirmation signal SPSTPs to 1.
4. As soon as strobe signal MF is set to 1, the CNC checks whether
spindle stop confirmation signal SPSTPs is 1. If the SPSTPs
signal is 1, the CNC sets the spindle unclamp signal SUCLPs to 1.
5. PMC must unclamp the spindle, and upon the completion of the
unclamp operation, the PMC must set spindle unclamp
completion signal *SEUCLs to 0.
6. When the spindle unclamp completion signal *SEUCLs is set to 0,
the CNC sets spindle unclamp signal SUCLPs to 0 to indicate that
the CNC has received the *SEUCLs signal.
7. When spindle unclamp signal SUCLPs is set to 0, the PMC must
set spindle unclamp completion signal *SEUCLs to 1. Also,
while setting the SUCLPs signal to 0, the CNC switches spindle
control from position control to spindle control.
8. If sequence pattern 3 or 4 is set, the CNC places spindle position
control in the servo-off state at the same time.
9. Finally, the PMC must set completion signal FIN for the
miscellaneous function strobe signal MF to 1. In response to this,
the CNC sets the MF signal to 0. Then, the PMC must set the FIN
signal to 0.
If sequence pattern 4 is set, spindle unclamp signal SUCLPs and
spindle unclamp completion signal *SEUCLs, explained above, are not
transmitted between the CNC and PMC.