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Im working in a shopping center, it is also hotel and office building, two towers exactly and someone is proposing a PLC control for the HVAC system, but Im thinking of a DDC control system. in this case what is the difference between PLC and DDC control?
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Answer Posted / prateek pathak
DDC stands for Direct Digital Controller. It can be called a PLC based system and it is recommended for HVAC systems. DDC keeps a centralized approach and all digital and analog controllers are placed under it.
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