
B-63943EN-1/02 11.SPINDLE SPEED FUNCTION
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(3) Canceling the spindle positioning mode and switching to the
spindle rotation mode
If specification A is selected, only the spindle positioning operation is
performed in the spindle positioning mode.
[Specification A: Bit 7 (IMB) of parameter No. 4950 = 0 ]
<1> Suppose that an M code is specified by a program. If an M
code is specified in the spindle rotation mode, the CNC issues
alarm PS0224.
<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 sets the spindle unclamp signal
SUCLPs to 1.
<5> When spindle unclamp signal SUCLPs is set to 1, the PMC
unclamps the spindle, and when unclamping of the spindle is
completed, the PMC sets spindle unclamp completion signal
*SUCPFs to 0.
<6> When spindle unclamp completion signal *SUCPFs is set to 0,
the CNC sets spindle unclamp signal SUCLPs to 0 to post that
the CNC has received the *SUCPFs signal.
<7> When spindle unclamp signal SUCLPs is set to 0, the PMC must
set spindle unclamp completion signal *SUCPFs to 1. After
setting the SUCLPs signal to 0, the CNC rotates the spindle,
makes a movement as specified, then stops the spindle.
<8> The CNC sets spindle clamp signal SCLPs to 1.
<9> 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 *SCLPFs to 0.
<10>When spindle clamp completion signal*SCLPs is set to 0, the
CNC sets spindle clamp signal SCLPs to 0 to post that the CNC
has received *SCLPFs
<11>When spindle clamp signal SCLPs is set to 0, the PMC sets
spindle clamp completion signal *SCLPFs to 1.
<12>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.