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Step Instructions Section 3-21
Example 3:
Parallel Execution
The following process requires that two parts of a product pass simulta-
neously through two processes each before they are joined together in a fifth
process. Various sensors are positioned to signal when processes are to start
and end.
0.01 0.02
0.01 0.02
W0.00
W0.01
W0.00
0.03 (SW A2)
0.04 (SW B2)
W0.02
W0.01
0.05 (SW D)
W0.02
W0.02
W100.00
Process
C reset.
Process B
reset.
Process C
started.
Process
A reset.
Process
C started.
Process
A started.
Programming for process C
Programming for process B
Programming for process A
SW1
SW2
SW3
SW4
SW6
SW5 SW7
Process C
Process A
Process D
Process B
Process E
Conveyer A
Conveyer C
Conveyer D
Conveyer B
Conveyer E
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