Category Archives: PLC Learning

This offers ways in which you can learn PLC programming.

Rock Crusher Plant EasyPLC BRX Do-More

A rock crusher (jaw crushers) is also known as “rock breakers” and is used to break up larger, more complex materials into more manageable pieces. The EasyPLC simulator rock crusher plant will show you how you can control this process through a programmable logic controller. We will be using Do-More technology to control this plant automation.
Rock Crusher Plant EasyPLC BRX Do-More
Using the five steps for PLC program development, we will discuss and show you how to program this rock crusher plant. An Automation Direct BRX Do-More PLC will be used for this application, but the general methods can be used for just about any PLC on the market. Let’s get started. Keep on Reading!

Don’t Get Caught Without These 3 PLC Requirements

If you are looking to purchase a PLC system, there are three key components that you should look for. If your current system does not contain these features, you need to replace it with one that does as soon as possible. The three most important features you should look for in your new PLC system are the open communications protocol, the ability to integrate easily with other methods, and the ability to have remote access. Without these three essential requirements, your PLC system will be far less effective and will be more expensive to operate than it needs to be.

We are all data companies that need the information for continued improvement. The industrial internet of things (IIoT) is essential, and the ability to take advantage of this starts with the hardware you specify for your PLC control. PLCs are now considered edge devices. This means that information should be able to be sent and received to the PLC controller when it is required. Keep on Reading!

Productivity 2000 Series PLC Tag Database

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 within a tag database. The tag database is stored in the memory of the Productivity Series of PLCs from Automation Direct. Do not overthink tags. Tags are just names assigned to variables of any data type stored in the PLC memory.

We will now look at the tag numbering systems and database used with the Productivity 2000 controller. Let’s get started. Keep on Reading!

4 Way Traffic Light PLC Program EasyPLC

Traffic lights are used just about everywhere on busy roads around the world. They can help prevent traffic accidents and keep traffic flowing smoothly in the right direction by regulating the flow of cars, trucks, and other vehicles. The most common traffic light uses red, yellow, and green lights, along with arrows or flashes to indicate which lane should proceed when the lights change from green to yellow or red. Now you can visually see the 4-way traffic light by using the EasyPLC software suite. This provides an easy way of learning PLC programming.

Using the five steps for PLC program development, we will discuss how to program this traffic light. Four traffic lights and pedestrian panels with push buttons will be used. We will be using an Automation Direct Click PLC for this application, but the general methods can be used for any PLC. Let’s get started. Keep on Reading!

Productivity PLC Node-RED MQTT – P1000 / P2000

We will be using an MQTT broker in Node-RED to communicate to the productivity PLC clients. MQTT stands for Message Queuing Telemetry Transport. This simple ‘publish and subscribe’ communication protocol does not take too many resources.
Constrained devices with low bandwidth are ideal for MQTT. This protocol provides machine-to-machine (M2M) connectivity, perfect for the Internet of Things. (IoT) This protocol is not for remote IO or real-time (deterministic) applications. MQTT is a good solution for applications that move data from hundreds or thousands of machines (sensors) to clients in many networks.

We will be installing and programming the AEDES MQTT Broker in Node-RED. A productivity P2000, P1000, and Node-RED will be the clients communicating to the broker. The PLC simulator inputs on each controller will control the outputs on the other controller. This will demonstrate the communication capability for publishing and subscribing to this IoT platform. Let’s get started. Continue Reading!

Productivity 2000 Series PLC Online Programming

The Productivity Suite Software allows us to modify our existing program and execute the new code without stopping the scanning of the PLC. This is referred to as online programming or editing. We change the ladder logic code and when we save it to the PLC, the current scan of the PLC is held until the new code is written into the unit. It then releases the scan and our new program starts to execute. This happens in milliseconds so our process can continue to operate.

We will be taking our existing Start / Stop circuit from last time and add a Jog input using online programming. Changing the program online is a common method of programming. The documentation will also be changed during this online program change. Let’s get started. Keep on Reading!