PLC Energize or De-energize Outputs
Write the following PLC Program to Energize or De-energize the Outputs based on Events.
A certain switch (I:1/0) is to start a process.
The process is to run for 30 seconds, stop for 10 seconds and then repeat as long switch I:1/0 remains closed.
Opening I:1/0 at any time is to reset all timers and de-energize all outputs. Output O:2/0 is to be energized during the 30s run period and output O:2/1 is to be energized during the 10s stop period.
During the run period, a single output O:2/2 is controlled by input I:1/1. If I:1/1 is open (at the beginning of the run period) O:2/2 is to be off for the first 5 seconds then on for 10 seconds.
If I:1/1 is closed (at the beginning of the run period) O:2/2 is to be off for the first 10 seconds then on for 15 seconds.
Changing I:1/1 after the run period has begun should not change the above sequence. Output O:2/2 is always to be off during the stop period.
PLC Ladder Logic
You can share the detailed explanation of above PLC ladder logic with comments section.
Author : Dr. D. J. Jackson
If you liked this article, then please subscribe to our YouTube Channel for PLC and SCADA video tutorials.
You can also follow us on Facebook and Twitter to receive daily updates.
Read Next:
PLC Program to Read Temperature in PLC
PID Controller Parameters Tuning Manually
PLC Program for Daily Production Record
Programmable Logic Controller Questions
Control Valves Application using PLC
Which software you used
Hi, exactly what I’ve been searching for – Thanks.
Is it possible to write it in STL? I struggle a bit with Ladder.
Many Thanks.
Tsepo