The Most Powerful PLC Instruction?

The Most Powerful PLC Instruction?

What is the most powerful PLC instruction? What instruction or concept is the most powerful when programming any manufacturer’s PLCs? Many people will guess timers, counters, or the set and reset bit instructions. These are all great instructions, but the most powerful is the indirect or pointer instruction. In PLC programming, pointers, also called indirect … Read more

ACC Automation 2023 Review – PLC Learning

ACC Automation 2023 Review - PLC Learning

Over the past year, ACC Automation has continued to provide valuable content on PLC learning and industrial control. In 2023, the focus continued with PLC learning with minimum investment. Each year, we like to reflect on the past, present, and future of ACC Automation. The site has been built with the help of its audience, … Read more

Productivity 2000 PLC Node-RED Modbus TCP

Productivity 2000 PLC Node-RED Modbus TCP

We will now look at communication between the Productivity 2000 PLC (Modbus TCP Server) and Node-RED (Modbus TCP Client). Node-RED is a powerful, adaptable HMI/SCADA (Supervisory Control and Data Acquisition) development package that uses flow programming. Minimal coding is required; you can see the program flow visually. The best thing is that the software is … Read more

Mastering PLC – What you need to know!

In the current era of automation and digitization, Programmable Logic Controllers (PLCs) have emerged as integral components for varied industries, including manufacturing, construction, and more. Mastering the PLC and what you need to know involves different facets of the PLCs. Understanding their basics to troubleshooting common concerns is crucial in optimizing their efficiency and application. … Read more

Productivity PLC Node-RED MQTT – P1000 / P2000

Productivity PLC Node-RED MQTT - P1000 / P2000

We will use 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 … Read more

PLC Learning Series – HMI – Interfacing

PLC Learning Series – HMI

A human-machine interface (HMI) is present in some form for every PLC. The HMI connects a user to a machine system to exchange information or control data. This interaction with the system can be through hardware or software. HMIs offer different people information and control in many ways for the automated system. Operators, supervisors, mechanics, … Read more