How Ladder Logic Program Scan Works

How Ladder Logic Program Scan Works

PLC programs scan cyclically. This means that it is repeated many times and in the same order. The primary sequence of a PLC scan is reading the inputs, executing the program, diagnostics, and communication, and updating the outputs. We will look at these scan items with particular attention to how the ladder logic program is … Read more

PLC Programming – A Tutorial for Beginners

PLC Programming - A Tutorial for Beginners

This tutorial is for beginners who are just starting to program PLCs. Using the EasyPLC simple conveyor, we will move a box back and forth on the conveyor. We will learn to write the PLC ladder logic program for this operation. Using the five steps to PLC programming development, we will determine what must be … Read more

Click to Click PLC Communication – Remote IO

Click to Click PLC Communication

We will connect two Click PLUS PLCs and communicate in three different ways. Using the send and receive commands, we will set up one PLC to be the master (client) and communicate with the slave (server). WiFi, Ethernet, and Serial communication will share common memory areas between the Click PLCs. The send and receive commands … Read more

How to Connect Pushbutton Switch to PLC

How to Connect Pushbutton Switch to Programmable Controller

We will connect a lighted pushbutton switch to a programmable logic controller (PLC). Using our Click PLUS PLC, we will be assembling, wiring, programming, and testing our pushbutton switch system. The Fuji Electric pushbutton, normally open (NC) contact, will be wired to the first PLC (X1) input. The LED light will connect to the Click … Read more

EasyPLC Solder Robot PLC Programming

EasyPLC Solder Robot PLC Programming

The Machine Simulator (MS) is part of the EasyPLC software suite. It has many built-in machines that are used to show different programming techniques. The solder robot example is one of these machines. This will demonstrate a sequencer robot example. In this case, four rivets are welded using a robot. The logic will step through … Read more

Learn PLC Programming Free Now – Video

Learn PLC Programming Free Now

We can learn plc free by using the Do-More Designer simulator. This is free, fully functional programming and simulator software. The PLC simulator also allows communication through the Ethernet and Serial ports of the computer to help you learn about HMI and communication. This video series will take you through the simulator’s basics of installing, … Read more