Job Management: Flow Diagram - Siemens SINUMERIK 840D sl Function Manual

P4: PLC for SINUMERIK 828D
14.6 Function interface
Feedback signal
As feedback, the NC resets the status signals:
● DB1200.DBX2000.0 == 0
● DB1200.DBX2000.1 == 0
The job is now completed.
14.6.1.6

Job management: Flow diagram

①
②
③
④
⑤
⑥
1104
Start job:
DB1200.DBX0.0 (start) = 1
Waiting for end of job:
DB1200.DBX2000.0 (job completed) == 1 AND
DB1200.DBX2000.1 (error in job) == 0
⇒ Reset job request:
DB1200.DBX0.0 = 0 (start)
With DB1200.DBX0 0 == 0 (start), the job is completed by the basic PLC program:
DB1200.DBX2000.0 (job completed) = 0
Waiting for end of job:
DB1200.DBX2000.0 (job completed) == 0 AND
DB1200.DBX2000.1 (error in job) == 1
⇒ Perform error handling
⇒ Reset job request:
DB1200.DBX0.0 (start) = 0
With DB1200.DBX0.0 == 0 (start), the job is completed by the basic PLC program:
DB1200.DBX2000.1 (error in job) = 0
If DB1200.DBX0.0 (start) is reset before the end of job is signaled by the basic PLC
program, the job is executed without further feedback.
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions