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Field Transmitter Communication Troubleshooting

S Bharadwaj Reddy
When intelligent devices are not communicating or show abnormal status for any reason the DD file often get blamed first. However, the DD file is usually not the problem so...

Fieldbus vs 4-20mA

S Bharadwaj Reddy
The sensors and actuators that are connected to the inputs and outputs (IO) of a Programmable Controller or PLC are normally mounted in the plant. Therefore the IO connections of...

Serial Communication Data Transmission Modes

S Bharadwaj Reddy
Serial Communication Data Transmission Modes means transferring of data between two devices. It is also called communication mode. These modes direct the direction of flow of information. There are three...

Difference Between RS232 and RS485

S Bharadwaj Reddy
RS232 vs RS485 RS232 and RS485 are standards for data cables. To exchange data between nodes on a network, the most commonly used tools are line drivers and receivers. It is...

How Modbus Communication works

S Bharadwaj Reddy
Introduction to Modbus Modbus is the “granddaddy” of industrial communication protocols. It was originally designed in the mid-1970s by Modicon as a way to link intelligent devices with PLCs using...

Difference Between LAN and WAN Networks

S Bharadwaj Reddy
The two most popular network types today are LAN (Local Area Network) and WAN (Wide Area Network). These two networks are generally classified on the basis of their coverage area....

Introduction to Fieldbus Function Blocks

S Bharadwaj Reddy
Introduction A fieldbus system is a distributed system composed of field devices and control and monitoring equipment integrated into the physical environment of a plant or factory. Fieldbus devices work...

Advantages and Disadvantages of Network Topologies

S Bharadwaj Reddy
A network topology refers to the way in which nodes in a network are connected to one another. The network structure defines how they communicate. Each kind of arrangement of...

Different Types of Network Topologies

S Bharadwaj Reddy
A network topology describes the configuration of a communication network and the physical and logical arrangement of the nodes that form it. Here is a description of the different types...

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