Programmable Logic Controller Engineering Tool and Programmable Logic Controller Engineering Tool Program

摘要

The programmable logic controller engineering tool (2) searches for a programmable logic controller in the programmable logic controller system, acquires information of the belonging network from the programmable logic controller found by the search, and a communication unit (204). ) Based on the acquired information, a display control unit (201) that generates a system configuration diagram showing a network configuration of the programmable logic controller system, and list information of the programmable logic controllers included in the system configuration diagram, And a data holding unit (203) that holds information acquired by the communication unit (204). The display control unit (201) is acquired by the communication unit (204) when the system configuration diagram is updated. Based on the retained information and list information over data holding unit (203), to generate a system configuration diagram that displays the difference between the system configuration diagram previously created.