Siemens SIMATIC FM 452, Руководство пользователя

Страница: 46 / 210

Programming the FM 452
6-8
FM 452 Electronic Cam Controller
C79000-G7076-C452-04
Job Status
You can check the status of job execution using the return value RET_VAL and the
JOBBUSY activity bit in the channel DB. You can evaluate the status of a single
job based on the trigger, done, and error bits of the job.
•
Job active:
– RET_VAL = 1
– JOBBUSY = 1
– Trigger bit = 1
– Done bit = 0
– Error bit = 0
•
Job completed without error:
– RET_VAL = 0
– JOBBUSY = 0
– Trigger bit = 0
– Done bit = 1
– Error bit = 0
•
Job completed with error in this job:
– RET_VAL = –1
– JOBBUSY = 0
– Trigger bit = 0
– Done bit = 1
– Error bit = 1
•
Write job aborted:
– RET_VAL = –1
– JOBBUSY = 0
– Trigger bit = 0
– Done bit = 0
– Error bit = 1