How a Modbus TCP/IP RS-485 temperature controller can fit into a Energy management system(EMS) in solar industrial ?EMS(Energy management system) is the brain of solar system for household, when the solar generates excessive power and that excessive power should be well perserved,  one of the approach woud be direct the excessive power to water heater. Here’s how a PID controller fits into and enhances a solar-powered EMS system. Basically when EMS sees extra power,  it will give command to Temperature controller via modbus TCP/IP and heat up water. PID-Based Control: EMS → Temperature Setpoint (°C) → PID Controller (as Intelligent Regulator) → Heater The PID controller is no longer just a dumb power valve; it becomes a smart, autonomous agent managing a thermal process, with the EMS acting as a supervisor that optimizes the agent's goals based on solar availability.   How the EMS & PID Controller Interact: Key S...

ON/OFF control mode is simplest form of automatic control mode, it's like a switch, either ON or either off. the rules is very simple, in a reverse control situation, when prorcess value is lower then the desirved, the output is fully on, when process value higher than the setting value, fully off. an analogy we often use is like driving the car from starting point to finishing line.In the situation of an ON/OFF control, you apply the full thrust and drive the car to the finishing line, and after the car cross the finishing line, you release the thrust and turn the engine off. the rule is very simple, the downside of this type of control mode is there will be significant overrun at the finishing line, it's impossible to stop on the finishing without overrun, in contrast, the PID control mode, the driver will observe carefully and calculate the distance and speed in relation to the finishing line, and gradually apply less thrust and maybe apply a little brake too to make sure the car st...