PLC (Programmable Logic Controller) LAB - Gemo Smart Relay PLC

In Automated systems, the PLC is commonly regarded as the heart of the control system. With a control application program (stored within the PLC memory) the PLC constantly monitors the state of the system through the field input devices, feedback signals. The PLC may be used to control a simple and repetitive task, or a few of them may be interconnected together with other host controllers or host computer through a sort of communication network, in order to integrate the control of complex process. Motivations of using PLCs When the first electronic machine controls were designed, they used relays to control the machine logic (i e. press "Start" to start the machine and press "Stop" to stop the machine). A complex machine might need a wall covered in relays to control all of its functions. As well as of that, there are a few limitations to this type of control.