Iai-america XSEL-KX Manuel d'utilisateur Page 279

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263
Part 4 Commands
[Example 3]
If an input condition is specified, the output will turn ON upon completion of operation in
the step before the one in which the input condition is specified.
Output
field
Timing
POTP
1
308
Turn ON as P1 approaches.
309
Turn ON as P2 approaches.
310
Turn ON when P3 operation is complete.
311
Turn ON as P11 approaches.
PATH
1
3
308
312
Turn ON as P21 approaches.
20
ARC2
10
11
311
313
Turn ON as P22 approaches.
PATH
21
23
312
314
Turn ON when P23 operation is
complete.
[4] When executing continuous movement commands sequentially, the controller is calculating
approx. 100 positions ahead. This is why the steps are displayed continuously on the PC
screen or teaching-pendant screen, regardless of the actual operation. The last step in the
continuous operation section executed by continuous movement commands will wait for the
applicable operation to complete.
PATH
1
5
Actuator operation
ARC
6
7
PATH
8
12
Step displayed on the PC software or teaching pendant
BTON
310
[5] Do not allow the output fields to duplicate in the continuous operation section executed by
continuous movement commands.
Duplicating output fields in the continuous operation section will not achieve the expected result.
The output field will turn OFF at the start of processing of each command.
POTP
1
Do not let outputs 305 through 308 to duplicate, as in
the example shown at left.
PATH
1
5
305
Continuous operation section executed by continuous
movement commands
PATH
11
15
304
The final output status of duplicate 305 through 308 is indeterminable, because it is affected by
the positioning calculation time and the relationship of durations of actual operations.
Do not create a program containing an indefinite loop of continuous movement commands using
the TAG-GOTO syntax. (It will result in an accumulation of coordinate conversion errors.)
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