Application Example Programs
E–17
| | 1/4 in. | |
| | increments | |
| | | |
| | +MOV–––––––––––––––+ | |
| +–+MOVE +–+ |
| |Source N7:20| |
| | 0| |
| |Dest N7:10| |
| | 0| |
| +––––––––––––––––––+ |
Rung 7:7
| |
|–––––––––––––––––––––––––––––––––––––+END+–––––––––––––––––––––––––––|
| |
Time Driven Sequencer Application Example
The following application example illustrates the use of the TON and SQO
instructions in a traffic signal at an intersection. The timing requirements are:
•
Red light – 30 seconds
• Y
ellow light – 15 seconds
•
Green light – 60 seconds
The timer
, when it reaches its preset, steps the sequencer that in turn controls which
traffic signal is illuminated. For a detailed explanation of:
• XIC, XIO, and T
ON instructions, see chapter 6.
•
SQO and SQC instructions, see chapter 1
1.
Reference
efesotomasyon.com - Allen Bradley,Rockwell,plc,servo,drive
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