74
96-8000 Rev AC
May 2010
Example #2
Basic pallet change program that tracks which part is to be machined on each
pallet. Each pallet has a different machining operation. Note that the P code for
M46 is a line number in the current program, not a subroutine number.
Oxxxxx
M50
M46 Q1 Pxx1
M46 Q2 Pxx2
M99 Pxxxx
Nxx1
Part program
M99 Pxxxx
Nxx2
Part program
M99 Pxxxx
Nxxxx
M99
Program number
(Perform pallet change after the Part Ready button is pressed
or PST is updated)
This line will check to see if pallet #1 is on the machine. If it is
then it will jump to line xx1. If the pallet is not on the machine,
then it will continue to the next line. (See description of M46.)
(If pallet #2 is loaded, program will jump to line xx2, otherwise
it will go to the next line.)
(Jump to line Nxxxx: See the “M Code” section for a more
detailed description of M99)
(Line number.)
(User’s part program for Pallet #1)
(Jump to line Nxxxx)
(Line number)
(User’s part program for Pallet #2)
(Jump to line Nxxxx)
(Line number)
(Repeat program)
Example #3
This is an alternate method to Example #2 that uses subroutine calls, but does
not jump if the pallet is unscheduled.
NOTE: For proper operation M50 with a P code must be preceded by M36.
M36 P1
M50 P1
M98 Pxxx1
M36 P2
M50 P2
M98 Pxxx2
M99
(Flash “No Pallet Scheduled” on display, flash green beacon, on
Schedule Pallet button #1 until button is pushed or pallet is sched
-
uled in PST)
(Load Pallet #1)
(Control jumps to program Oxxx1 and runs this program)
(Wait for pallet to be scheduled)
(Load Pallet #2)
(Control jumps to program Oxxx2 and runs this program)
(Repeat Program)
An M99 at the end of a program will cause continuous operation. M30 at the
end of a program will cause the control to wait for the operator to press Cycle
Start.
Pallet Changer Recovery (Not For Vertical Mill APC)
EC-300 or MDC -
If the pallet change is interrupted another M50 must be run;
use M50P1 or M50P2. If this puts the wrong pallet into the mill, then an addi
-
tional M50 must be run.
Содержание 96-8000
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