
11.SPINDLE SPEED FUNCTION B-63943EN-1/02
- 1280 -
- Sequence (Time chart)
Switching to the spindle positioning mode
The operation of canceling the spindle rotation mode to enter the
spindle positioning mode is performed by specifying an M code for
switching to the spindle positioning mode.
Set the M code for switching to the spindle positioning mode in
parameter No. 4960 in advance.
<1> Suppose that an M code is specified by a program.
<2> Miscellaneous function code signal M00 to M31 is sent, and the
miscellaneous function strobe signal MF is set to 1 at the same
time. This sending procedure is the same as for ordinary
miscellaneous functions.
<3> When strobe signal MF is set to 1, the PMC must read the code
signal and perform corresponding processing. After completing
the corresponding processing, the PMC sets spindle stop
complete signal SPSTPs to 1 when the spindle is stopped.
<4> As soon as setting strobe signal MF to 1, the CNC checks
whether spindle stop complete signal SPSTPs is set to 1. When
SPSTPs is set to 1, the CNC changes the spindle control mode
from the spindle rotation mode to spindle positioning mode, and
sets spindle positioning mode signal MSPOSs to 1.
<5> The CNC sets spindle unclamp signal SUCLPs to 1.
<6> When spindle unclamp signal SUCLPs is set to 1, the PMC
performs processing to make the spindle usable for positioning.
When completing the processing, the PMC sets spindle unclamp
completion signal *SUCPFs to 0.
<7> When spindle unclamp completion signal *SUCPFs are set to 0,
the CNC sets spindle unclamp signal SUCLPs to 0 to post that
the CNC has received the *SUCPFs signal.
<8> When spindle unclamp signal SUCLPs is set to 0, the PMC must
set spindle unclamp completion signal *SUCPFs to 1.
<9> The CNC rotates the spindle and stops the spindle at a certain
position. (This is generally called spindle orientation.) Then,
the CNC sets reference position return completion signal ZPx (x
denotes the controlled axis number of the spindle positioning
axis) to 1.
<10>The CNC sets spindle clamp signal SCLPs to 1.
<11>When spindle clamp signal SCLPs is set to 1, the PMC clamps
the spindle mechanically with a device such as a clutch or shot
pin as necessary. After completing the clamping operation, the
PMC sets spindle clamp completion signal *SCPFs to 0.
<12>When spindle clamp completion signal *SCPFs is set to 0, the
CNC sets spindle clamp signal SCLPs to 0 to post that the CNC
has received *SCPFs.
<13>When spindle clamp signal SCLPs is set to 0, the PMC sets
spindle clamp completion signal *SCPFs to 1.
<14>Finally, the PMC sets completion signal FIN to 1 for
miscellaneous function strobe signal MF. In response to this,
the CNC sets the MF signal to 0. Then, the PMC sets the FIN
signal to 0.