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PLC ladder logic programming language is a collection of many instruction sets. To become a programmer in ladder logic one have to know more about the list of the instruction set that can be used at appropriate positions. The journal discusses the…
What is Counter? Counter is an element designed simply to count events in PLC, however, depending on the manufacturer, there may be three types of counters in general: Up counters which only count upwards (1, 2, 3, …) and which are usually…
The PLC reads inputs, processes them, and produces outputs through a program Using a portable device, console, or personal computer, the internal operation of a PLC can be tracked and many indicator lights are provided for troubleshooting. Here are the steps for…
To interface PLC with SCADA first we have to establish a proper communication channel. The monitoring PC’s communications or network port link is connected with the cable (usually) that connects to the PLC. The next step is to ensure that both the…
What is PLC Timers? PLC timer is an element in ladder logic programming taken from electrical systems. Timers are devices that count time increments. The timer creates a delay in both PLC programming and in relay boards on connection or instantaneous disconnection….
What is Modular PLC? A Modular PLC consists of multiple modules such as CPUs, I/O modules, Power modules which are connected to a popular rack. It can expand the capacities of I / O. The modular PLC is versatile and for this…
1. What is PLC? PLC stands for Programmable Logic Controllers, PLC is an industrial computer used to monitor inputs and to regulate (turn on / off) their outputs to automate a device or process, depending on their state making choices based on…
Introduction: In PLC (Programmable Logic Controller) is an electronic solid-state device that can control a process or a machine and has the ability to be programmed or reprogrammed quickly according to the demand of the application. It was invented to replace the…
PLC selection is generally based on the controller’s necessary inputs, outputs and features. The first choice is the controller sort; rack, mini, micro, or based on software. This decision will depend upon the basic criteria listed below. System requirements: To determine any…
Basics of Instruction list programming: Instruction List (IL) is a low level textual language used in PLC system, which has a structure similar to a simple machine assembler. A instructions list provides programs with each instruction on a new line as a…
