PLC Input Devices

In this PLC programming for industrial automation tutorial, we will learn about PLC input devices. The input devices of PLC are used to take input from the operator and convert it into a signal that the controller can understand. The input devices of PLC are typically analog or digital, and may be in contact with the control panel or remotely located. Common input devices of PLC are the push buttons, dials, switches and displays. The PLC output devices are used to send a signal from the controller to a control process such as pumps, motors or valves. The output devices of PLC are typically analog or digital outputs that may be in contact with the control panel or remotely located. Common output devices of PLC are the push buttons, lamps, displays and relays. Input devices are used to enter data into a programmable logic controller (PLC). They are also used to control external devices. There are a wide range of input devices that can be used in a PLC. These include keyboards, keypads, touch screens, joysticks, and switches. The use of input devices in PLCs is common in many industries such as manufacturing and construction. They are used by engineers to control automated equipment such as assembly lines or cranes. Analog input devices for PLC are used to measure analog signals, such as voltage and current. They can be used in conjunction with PLCs to monitor and control the operation of various machines. The most common types of analog input devices are potentiometers, variable resistors and voltage dividers. Input devices are used to give instructions to the PLC. The input device has a set of parameters that can be changed depending on the desired input. These parameters of input devices used with PLC are: -The type of input signal -The number of inputs and outputs -The type of display -Input voltage Field devices in PLC are the sensors and actuators which are used to monitor and control an industrial process. They can be classified into three types: analog, digital, and hybrid. Analog field devices are the most common of the three types of field devices. They convert a physical quantity into an analog signal which is then transmitted to a receiver. Digital field devices convert the physical quantity into a digital signal which is then transmitted to a receiver. Hybrid field devices use both analog and digital signals to transmit data from sensors to receivers.