State feedback monitoring system in activated carbon injection system

The invention discloses a state feedback monitoring system in an activated carbon injection system, and relates to the technical field of flue gas treatment of a garbage power plant, a PLC system is connected with a frequency converter and a control instrument through an RS485 mode and communicates based on a modbus rtu communication protocol, when facing multiple instruments and multiple devices, simple line lap joint can be carried out through communication. The connection of hardware can be realized, functions can be quickly modified in software through a programming mode, logic control requirements can be met, and for an activated carbon injection system, adjustability and optimization can be realized; meanwhile, the state and data are presented on the touch screen through the RS485 communication interface in the same way according to the feedback information of the running state of the equipment obtained through communication, so that holes are reduced in a panel of the control cabinet, and the state of