PLC Hardware Components: 1. PLC Hardware Components - The input and output interface modules consists of an I/0 rack and individual I/O modules. Input interface modules, accept signals from the…
Basis of PLC Programming: 1.Processor Memory Organisation:The term processor memory organization refers to how certain areas of memory in a given Basis of PLC Programming are used. Different PLC manufacturers…
PLC Operation: To understand the PLC Operation, consider the simple process shown in Fig. 21.63 In this process a mixer motor is to be used to automatically stir the liquid…
PLC Components: A PLC is a solid state device designed to perform logic functions previously accomplished by electro-magnetic relays. Basically, the PLC Components is an assembly of solid state digital…
PLC Hardware: PLC hardware falls into the following physical configuration: Fixed Input/ Output (I/O) and Modular I/O. 1.Fixed 1/0 PLCs A fixed PLC Hardware consists of a fixed, or built-in,…
PLC Basic Process: A PLC Basic Process is basically made up of the following sections, each of which has a unique function to perform in its operation. The sections are:…
PLC Programming Languages: The term PLC programming languages refers to the method by which the user communicates information to the PLC. The two most common language strucÂtures are ladder diagram…
PLC Register: PLC Register - Let us consider a simple example and compare the ladder diagram with its real world external physically connected relay circuit. In Fig. 21.32 (a), the coil…