Haas Mill, Operator'S Manual

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57 Operation 96-8000 rev R June 2007
M48 – Validate that current program is appropriate for loaded pallet
Checks in the Pallet Schedule Table that the current program is assigned to the loaded pallet . If the current
program is not in the list or the loaded pallet is incorrect for the program, an alarm is generated. M48 can be in a
program listed in the PST, but never in a subroutine of the PST program. An alarm will occur if M48 is incorrectly
nested.
M49Pnn Qmm – Sets the status of pallet nn to a value of mm.
Without a P-code, this command sets the status of the currently loaded pallet. The status of each pallet are
defined in the pull-down menu of the (PST).
Operator Load Station (EC-300, EC-400, MDC)
To ease loading/unloading parts and to speed production pallet changing mills have an additional load area. The
load station is guarded by a door, and a sub-panel includes a few buttons to control the pallet changer. As a safety
precaution the load station door must be closed before a pallet change can occur.
Note: The EC-400 must have the pallet in the load station at home to do a pallet
change.
Sub-Panel Controls
Emergency Stop: The button behaves just like the one on the operator's pendant.
Rotary Index (EC-300 only): Rotates the load station pallet (see Setting 164).
Part Ready: Used to indicate the pallet is ready. It also contains a light that 1) blinks when the control is waiting for
the operator or 2) is on when the operator is ready for a pallet change.
Pallet Changer G-Code
G188 Get Program From PST
Calls the parts program for the loaded pallet based on the PST entry for the pallet
Pallet Changer Programming
The Pallet Changer can be programmed to run the same parts program on both pallets, or a different program on
each pallet. See “Sample Programs” for some of the options available for pallet change programming.
Method 1
The following method is the preferable to accomplish a pallet change.
To perform automatic pallet sequencing and part program selection, each pallet must be “scheduled” and must have
a part program assigned to it. Scheduling is done in two ways, the first is a pallet can be scheduled with the Part
Ready button on the operator’s panel. Pushing the button schedules the pallet that is outside of the machining
area.
The second is the pallets can be scheduled from the Pallet Schedule Table (PST). This display can be found by
pressing the CURNT COMDS key and then pressing the Page Up or Page Down keys until the Pallet Schedule
Table page is reached. Use the arrow keys to highlight the “Load Order” box for the pallet. Enter a pallet number
and then the Write/Enter key. If there is already a priority number for that pallet, the “Load Order” numbers of the
other pallets will be updated as necessary. A pallet that is on the receiver (in the work area) will have an asterisk in
the “Load Order” column; this pallet cannot be scheduled.
Assigning a part program is also done in the PST display. The arrow keys are used to highlight the “Program
Number” box for the pallet. The program number is entered by keying the number and then pressing the Write/Enter
key. For example, keying "O123", then Write/Enter will put the program number O00123 into the table.
If a parts program encounters an M50 (without a P code) and the Part Ready button has not been pressed, the
control will pause operation, the beacon will blink green, and the message “None Scheduled” is displayed. The mill
will wait until the Part Ready button has been pressed, or the PST has been updated, before performing the pallet
change. This feature prevents a pallet change from occurring before the operator is ready. The Part Ready button
can be pressed at any time and will be recognized when the next pallet change is required.