The first PLC was built in 1968 in the United States and entered the German market in 1973, and now companies in the world, such as Germany's Siemens Corporation, are involved in the construction and operation of PLCs, most of which are PLCs in the Siemens company, as well as training Industrial automation systems in the technical and professional training centers are based on Siemens' hardware. In other words, the PLC is a logical controller that can be defined by the program's logic of control and, if necessary, easily changed it. PLC or Programmable Logic Controller is a software controller that receives information in the Binary field in the input field and processes it according to the program stored in its memory, and the result of the operation from the output part as commands to receivers and command promoters (Actuators). Which should be configured when used in the software configuration. In this software all inputs and outputs of PLC, including analog and digital inputs, outputs, counter modules, status modules and so on.
Siemens SIMATIC STEP 7 Professional is a powerful Siemens software program for programming PLCs produced by this company.
