Monitoring device that performs monitoring on operations of an actual machine

A monitoring device that performs is monitoring on operations of an actual machine, the device comprising:

• an acquisition unit which acquires actual operation data that indicates actual operations of each portion of an actual machine from a control device which controls the actual machine;
• a display item setting unit that sets display items that are included in a timing chart that is displayed on a display device;
• and
• a storage unit,
• wherein the storage unit stores reference operation data indicating a reference operation of each portion of the actual machine,
• first related information that associates specific actual operation data and reference operation data with the display items, and
• second related information that associates components that are included in a virtual machine on an image that simulates the actual machine with the specific actual operation data and the reference operation data,
• wherein the device further comprises:
• a timing chart generation unit which generates, for the display items, an actual operation timing chart that indicates a temporal change in an actual operation on a basis of actual operation data corresponding to the display items in the first related information and a reference operation timing chart that indicates temporal change in a reference operation on a basis of reference operation data corresponding to the display item in the first related information, and displays the actual operation timing chart and the reference operation timing chart on the display device;
• and
• a simulation data generation unit which generates simulation data of a reference image that is an image when the virtual machine performs a reference operation and a real image that is an image when the virtual machine performs an actual operation, on a basis of the reference operation data and the actual operation data that are associated with the components in the second related information.