PLC’s and RTU’s are both electronic devices. RTU stands for Remote Terminal Units. An RTU is an electronic mechanism that is regulated by a microprocessor. The chief purpose of an RTU is to interface the SCADA, or Supervisory Control and Data Acquisition to the objects that present physically.
The interface between objects and SCADA occurs by utilizing supervisory system messages to manage all the connected objects. RTU is a better option because it employs wireless communication and is appropriate for broader geographical telemetry, while PLC’s are better with local controls. PLC stands for Programmable Logic Controller. PLC’s are digital computers, and they are used primarily for powering the electromechanical processes.
For example, construction in factories, light fixtures, and amusement rides. They are expressly intended for output arrangements and multiple inputs, and they have electrical noise immunity, vibration and impact resistance, and varied temperature fluctuations. Some of PLC’s functions are process control, relay control, motion control, networking, and handling data.