ACC Automation: PLC & Industrial Control Learning
Practical Tips and Techniques
We will now look at the tag numbering systems used with the Productivity Mini PLC P1-M622-16DR. The Productivity Suite Software allows us to use tags in the PLC. Tags are a method for assigning and referencing memory locations (numbering systems) within the programmable logic controller. They allow a more structured programming approach and are stored … Read more
The Productivity Suite Software allows us to modify our existing program and execute the new code without stopping the PLC scan. This is referred to as online editing. We change the ladder logic code, and when we save it to the P1-M622-16DR PLC, the current PLC scan is held until the new code is written … Read more
We will now look at wiring and testing our first ladder logic program with the P1-M622-16DR Mini PLC. Having created our start-stop motor circuit and learned about the monitoring tools in the Productivity Suite Software, it’s time to connect real-world devices and see our program in action. We will wire a start pushbutton, a stop … Read more
Normally open (NO) contacts or inputs in the PLC ladder logic program do not mean the same as a wired normally open switch. NO contacts on the ladder logic provide the logic condition for the rung to turn on the output. We will be looking at three things about the normally open (NO) contact on … Read more