What type of I/O does a PLC typically have?
A. Analog and Digital
B. Serial and Parallel
C. Ethernet and USB
D. Wireless and Bluetooth
Answer:A
What type of I/O does a PLC typically have?
A. Analog and Digital B. Serial and Parallel C. Ethernet and USB D. Wireless and Bluetooth
Explanation: PLCs typically have both analog and digital inputs and outputs. Analog inputs are used to read continuous signals from sensors, such as temperature or pressure, while digital inputs are used to read discrete signals, such as the position of a switch. Analog outputs are used to control continuous signals, such as the speed of a motor, while digital outputs are used to control discrete signals, such as turning a light on or off.