HEIDENHAIN PT 880 - Manual (Page 78)

78 I Operating Instructions
I – 7 Ex
ecuting a Pr
ogr
am
I – 7 Executing a Program
Preparing to Run a Program
When you are ready to run a program, you must be in the EXECUTE
PROGRAM
mode. Press the EXECUTE PROGRAM hard key, then the
FILE OPERATIONS soft key, press the LOAD soft key, scroll to the desired
program, then press the LOAD soft key again. The current program
block is displayed at the top of the screen.
Black to gray feature
This feature is an on-screen visual aid. The axes that need to be moved
into position will be shown in black in the axes bar. When you get into
position they will switch to gray. Note: If your depth axis is set to
THRU, the depth axis will not switch to gray.
Operating mode: PROGRAMMING
You will be given a choice of how you want to run the program: Single
block or automatic.
„ Single block
When you have moved the axis to the displayed position, call the
next block with the NEXT BLOCK soft key. It is recommended that you
use SINGLE BLOCK when running a program for the first time.
„ Automatic
Here the display automatically shows the next program block as
soon as you have moved to the displayed position. Press AUTOMATIC
when you are sure the program contains no errors and you want to
run it quickly. When all displayed axes have switched to gray
(indicating that they are in position) the program advances to the
next block or hole.
Single block example
Operating mode: EXECUTE PROGRAM
Select SINGLE BLOCK. The program block and the
graphic positioning aid will appear (if currently in use).
Position by traversing to display value zero.
Call the next program block by pressing NEXT BLOCK.
Continue positioning and calling blocks with NEXT BLOCK until
machining is complete.
Fig. I.57 1st EXECUTE PROGRAM screen