19.2.42 SPINDLE INDEXING FUNCTION (SIDl -
SID12) lNPUT/OUTPUT (Cent’d)
(6)
Spindle Indexing Extension Function Input
The control provides the following two inputs to process various
spindle indexing sequence made available by application of the
spindle idexing function described previously.
. SIDXI:
Spindle indexing restart input. If this inputs is closed with Spindle
Indexing On (SIDXO) output on, the control stops the spindle
indexing operation and turns the SIDXO output off. While the
indexing operation is discontinued, the spindle speed command
analog output becomes the spindle indexing start speed command.
When this input is turned off
spindle indexing operation.
in this state, the control restarts the
. SIDXING:
Spindle indexing position incremental input. This input is used to
designate an incremental position of the spindle indexing position
input (SID 1 to SID 12) from its previously designated position.
The use of this input enables the control to rotate the spindle
from the current indexing position to the next indexing position
without a full rotation. However, this input is invaild when the
spindle indexing operation is first made after rotating the spindle
in non-indexing operation or when the spindle indexing operation
is first made after the power-on operation.
. Example of Spindle Indexing Time Chart using Spindle Indexing
Extension Input:
(i) Restart the spindle index if spindle index is not completed, the
specified time after spindle indexing (Fig. 19. 19).
SPINDLE lNDEXl~
M CODE
\
SPINDLE lNDEXIN~
POSITION INPUT
(SID1-slD12) \
SPINDLE INDEXING
t
REQuEST INPUT
(SIDX)
SPINDLE INDEXING
I
OUTPUT (SIDXO)
4-
TIMER (EXT
SPINDLE INDEXING
1 ‘?
SEQUENCE INS) +
COMPLETION
OUTpuT (SIDXA)
SPINDLE INDEXING
RESTART INPUT
(SIDXI)
\
!
I
y~;~L:~)DExING
SPINDLE
INDEX
ANALOG OUTPUT SPEED
COMMAND
:~fiEfi;;:ED
o
I
Fig. 19.19
123
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