What Is Modbus and How Does It Work?

What is Modbus Heartbeat?

The Modbus communication protocol is the oldest and the most popular in process automation and communication between intelligent devices, which can be PLCs, HMIs, PCs, or DCS. What is Modbus? Modbus is a communication protocol …

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Dry Contact Vs Wet Contact

Dry Contact vs wet contact

I am often asked what the difference between dry and wet contact is. In this post, I will explain the difference between the two, their applications, and how they compare. The main difference between dry …

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How To Measure A 4-20mA Loop Signal Using A Multimeter

How To Measure A 4-20mA Loop Signal Using A Multimeter

The 4-20mA current loop is a common method for transmitting information between sensors, controllers, and transmitters in many industrial process monitoring and safety applications. Many industrial systems measure physical factors like temperature, pressure, level, etc; …

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Types Of 4-20 mA Current Loop

Most people struggle to wire 4-20 mA sensors because they do not know that different types of 4-20 mA current loop configurations are wired differently. In this post, I will explain the four types of the …

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What Is A Relay

What Is A Relay

Relay is one of the most used components in industrial automation and control. In this article, I will explain what a relay is, its type, and how to use it correctly. What is a relay? …

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4-20 mA Current Loop

4-20 mA Current Loop

The 4-20 mA current loop remains one of the most dominant types of analog output in the industry today. In this article, I will examine the history of the 4-20 mA loop, its wide use …

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