Engineers and technicians who are just getting started in the electrical sector, who are not familiar with Power Systems in Substations and who want to have basic knowledge about Automation of electrical installations.if we consider Remote Terminal Unit Vs PLC then Remote Terminal Unit Play important Role in Substations and many more like transportation, metallurgy, … Read more
Before proceeding and understanding how sensors and actuators are wired to the input/output modules of PLC, we need to understand the concept of sourcing and sinking. here plc inputs and outputs explained in detail This is required to appropriately select the sensors, actuators as well as the input and output modules of the PLC in … Read more
We’ll first try to understand what is the OSI model and then discuss the 7 layers of the model The main idea with computer networks is communication between different systems. The purpose of communication can be Information sharing. Suppose we have two systems A and B which want to communicate with each other. Let us … Read more
let’s start plc communication. There are lots of information inside a PLC. Information such as logical arithmetic calculations or the input and output status of a device is stored in PLC’s data memory. Data memory are internal memory registers of a PLC and each of its own memory address. These data are accessible from external … Read more
Today we will talk about a plc operation. Read all field input devices using the input interface like input module, execute the user program stored in the application memory, then on the basis of any control program programmed by the user like ladder logic or structure text, turn the field output device on or off, or whatever … Read more
Today I am gonna teach you about plc hardware we will start with the basic devices that are using the plc hardware then, later on, we will jump a bit the more advanced stuff so let’s start with the basic companies of the plc hardware 1.Allen-Bradley PLC 2.GE FANUC PLC 3.Modicon PLC 4.Siemens PLC Understanding … Read more
Hello everyone, back again with me. Actually, this is a PLC tutorial session. today I’m gonna give you a little PLC history This article is about the birth of PLC Solution It was a long time ago since it was 1968 when we back at the time GM Hydra-matic, the automatic transmission division of General … Read more
If Modbus is like “Batman” of protocols, then Profibus is the Superman – lean and fast. Profibus was developed in the 1990s to archive all industrial communication needs for both Industrial and process automation As with Modbus, there are a number of different names related to this protocol: 1.Profibus DP 2.Profibus PA 3.Profisafe 4.Profidrive 5.Profinet. … Read more
Counters are used in applications that require items or products to be counted. Counter instructions contain three words. The bits and words of counter instructions have addresses that can be used in the program of a PLC. All counter instructions consist of three words: word 0, word 1, and word 2. Each word contains 16 … Read more
PLC contains three basic types of timers: 1- On-delay timer (TON) 2- Off-delay timer (TOF) 3- Retentive timer (RTO) Timer instructions contain three words, with word “0” containing three bits that can be used in the program of a PLC.All timer instructions consist of three words: word 0, word 1, and word 2 Three addressable … Read more