May I ask about the control system for recycling water recycling?
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There is now a circulating water recovery system and a control system needs to be configured. The general process is as follows: 1. There are 3 flow rates; 2. 2 sets of liquid level control systems; 3. 3 separate groups of small devices, each with a program-controlled system.: If the program control systems of three water treatment systems are all brought by equipment manufacturers (these three may be different manufacturers), and now it is necessary to centrally display and control all on-site operating conditions and parameters in the control room, how should the instrument system in the control room be configured? Thank you!
The control room can be equipped with a set of PLC, and all three sets of data can be sent to the PLC for display, and the on-site operations can also be performed through the PLC.
If you only want to display, you can install a paperless recorder and transfer the parameters of all instruments to the recorder.
Please tell me about the 2nd floor: If all three devices have their own PLCs for on-site control, can they be equipped with another PLC in the control room?
As long as several sets of control systems are given a unified communication protocol, there will be no problem. The popular communication protocol now is: Complies with the RS485 protocol of MODUBUS.
If there is a communication interface, it is more convenient to use 485 communication
Why use so many PLCs? 3+1??? Just one system is enough. In the long run, it is more economical and convenient to use PLC
Because the three sets of equipment may each have PLCs, and they must be able to be displayed and controlled centrally in the control room.