Control system, method, program, and information processing device

A method for displaying a log of a control system, the control system including a controller configured to execute a user program periodically or as an occasional event, and an information processing device connectable to the controller,

• the controller including a first storage unit configured to store link information linking a predetermined event to a variable associated with the event,
• the information processing device including a second storage unit configured to store the link information and a monitor,
• the method comprising:
• causing the controller to write first log information in association with time information into the first storage unit in response to occurrence of the predetermined event, the first log information including information about the event, and a current value of a predetermined variable associated with the event included in the link information;
• causing the controller to write second log information in association with time information into the first storage unit in accordance with a predetermined period, the second log information including information about a value of the predetermined variable;
• causing the information processing device to obtain the first log information and the second log information from the controller;
• causing the information processing device to display the first log information obtained from the communication unit onto the monitor, the first log information including the information about the event, and the value of the predetermined variable associated with the event at occurrence of the event indicated by the link information;
• and
• causing the information processing device to display, based on the link information and the second log information, information indicating the value of the predetermined variable linked to the information about the event included in the first log information onto the monitor.

An information processing device for a control system including a controller configured to execute a user program periodically or as an occasional event, the information processing device being connectable to the controller,

• the controller including a first storage unit configured to store link information linking a predetermined event to a variable associated with the event, a first writing unit configured to write first log information in association with time information into the first storage unit in response to occurrence of the predetermined event, the first log information including information about the event, and a current value of a predetermined variable associated with the event included in the link information, and a second writing unit configured to write second log information in association with time information into the first storage unit in accordance with a predetermined period, the second log information including information about a value of the predetermined variable,
• the information processing device comprising:
• a communication unit configured to obtain the first log information and the second log information from the controller;
• a monitor configured to display information;
• a second storage unit configured to store the link information;
• and
• a control unit configured to control an operation of the information processing device,
• the control unit including
• a log display unit configured to display the first log information obtained from the communication unit onto the monitor, the first log information including the information about the event, and the value of the predetermined variable associated with the event at occurrence of the event indicated by the link information, and
• a link display unit configured to display, based on the link information and the second log information, information indicating the value of the predetermined variable linked to the information about the event included in the first log information onto the monitor.

A program for controlling an operation of an information processing device in a control system including a controller configured to execute a user program periodically or as an occasional event, the information processing device being connectable to the controller,

• the controller including a first storage unit configured to store link information linking a predetermined event to a variable associated with the event, a first writing unit configured to write first log information in association with time information into the first storage unit in response to occurrence of the predetermined event, the first log information including information about the event, and a current value of a predetermined variable associated with the event included in the link information, and a second writing unit configured to write second log information in association with time information into the first storage unit in accordance with a predetermined period, the second log information including information about a value of the predetermined variable,
• the information processing device including a second storage unit, a processor, and a monitor, the second storage unit being configured to store link information linking the event and designation of the variable,
• the program causing the processor to implement:
• obtaining the first log information and the second log information from the controller;
• displaying the information about the event included in the obtained first log information;
• and
• displaying, based on the link information and the second log information, information indicating the value of the variable linked to the information about the event included in the first log information onto the monitor.