Haas Automation VF Series, Книга управления

Страница: 97 / 127

90
January 2004
S
TARTING
A
UTOMATIC
O
PERATION
Before you can run a program, it must be loaded in the current memory. To select a program, push the LIST
PROG mode key. Use the cursor to find the desired program and then push SELECT PROG. The program list
includes the program name and the first comment. If the control was turned off while running, that program will
automatically be in current memory and selected.
If the machine has just powered up, you need to first push the POWER UP / RESTART key. This will initialize
all axes and the tool changer, display the Current Commands, and go to MEM mode with the control ready to
run. Pushing the CYCLE START button in the lower left of the control panel will begin execution.
To start a program other than at the beginning, scan to the block number using the down arrow or PAGE
DOWN until you reach the desired starting place. Push the MEM key and CYCLE START to begin. The
Program Restart function, selected from Setting 36, will change the way a program operates if you start from
other than the first block. The setting called Program restart “ON” will ensure that the correct tool and axis
positions are selected when you start from partway through a program.
Any errors in your program will cause an alarm and stop the running of the program. Typical alarms are travel
limits and missing I , J , and Q codes. Attempts to move outside of the limits of travel will also cause an alarm.
At any time that a program is running, the bottom left corner of the CRT will show RUNNING. If it does not show
this, the program has completed, has been stopped by the operator, or has been stopped by a fault condition.
P
ROGRAM
R
ESTART
Program Restart is designed to help the operator start a program from the middle of a tool sequence, while still
recognizing all the preceding lines of the program. To use Program Restart, turn on Setting 36 and move the
cursor to where you want to restart the program. Do this using the CURSOR up and down keys in MEM mode.
Then press Cycle Start. The control will begin reading the program from the very beginning, and you’ll see the
cursor run down through the program. When it gets to the line you cursor to (your restart point), the control will:
1) recognize all the conditions up to that point, 2) position the tool to the previous line in the program, and 3)
continue executing the highlighted line and then run the rest of the program. Some of the program interpretation
alarms that might have occurred prior to the restart point will not occur until after the program line of your
restart point is completed.
An undesirable Program Restart example: If Setting 36 is on and you cursor to line T2 to restart, the control
would change back to T1 (to recognize all the conditions up to that previous line in the program) and then
change back to T2 before starting axis motion. If you do not want this to happen, cursor to the line after T2, or
turn Setting 36 off when starting a program at the beginning of a tool sequence. The double tool change is
probably the most common problem to understand with Program Restart. The control does this because it
ensures that everything in the program is where it needs to be, looking back on the program in the previous
line, and that means go to tool 1. I t
O00123 ;
T1 M06 :
G90 G54 G00 X0 Y0 :
...
...
G53 G49 Z0
T2 M06 H03 ; (Usually undesirable to Restart on a T# line if setting 36 is on)
G90 G54 G00 X0 Y0 ;
...
...
G53 G49 Y0 Z0 ;
M30 ;