Graphical display system and method for industrial control logic

The invention belongs to the field of process control and industrial automation, and discloses a graphical display system and method for industrial control logic, which are convenient for on-site maintenance personnel to quickly locate fault reasons, reduce maintenance time and reduce influence on production schedule. The system comprises an OPC acquisition layer, a component packaging layer, a logic link layer and a terminal display layer. The logic structure in the control unit is displayed in a graphical form through the terminal display screen, and the real-time condition of each node andrelated data such as equipment operation parameters, process standards and the like in the logic relationship are displayed, so that field maintenance personnel are more familiar with the operation logic of the equipment and know the operation state of the equipment. The content displayed by the terminal cannot be modified, so that an original program can be prevented from being damaged by misoperation possibly generated