Unit, unit control method, and non-transitory computer-readable recording medium

A control method for a unit connectable to a PLC, the control method comprising:

• a step of relaying communication between an external device connected to a first network and an other unit connected to a second network;
• a step of acquiring address information and access right information of the other unit in the second network from the other unit, and generating setting information in which the address information and access right information are associated with an identifier that substitutes for the address information;
• and
• a step of generating link information used for accessing information in the other unit from the external device based on the identifier, wherein the link information comprises a hyperlink of each of one or more services provided by the other unit, and
• wherein the step of relaying communication comprises:
• based on receiving a first access request that includes login information of a user and is generated by the external device based on the link information from the external device, acquiring the login information and the identifier included in the first access request;
• acquiring the address information and the access right information corresponding to the identifier with reference to the setting information;
• specifying access right of the user to each of the one or more services based on the login information and the access right information;
• transmitting information including the hyperlink of the service to which the user has the access right to the external device;
• and
• accessing information in the other unit based on a second access request including the address information in response to receiving a third access request to any service to which the user has the access right from the external device.

A non-transitory computer-readable recording medium, recording a control program for a unit connectable to a PLC, the control program causing the unit to execute:

• a step of relaying communication between an external device connected to a first network and an other unit connected to a second network;
• a step of acquiring address information and access right information of the other unit in the second network from the other unit, and generating setting information in which the address information and access right information are associated with an identifier that substitutes for the address information;
• and
• a step of generating link information used for accessing information in the other unit from the external device based on the identifier, wherein the link information comprises a hyperlink of each of one or more services provided by the other unit, and
• wherein the step of relaying communication comprises:
• based on receiving a first access request that includes login information of a user and is generated by the external device based on the link information from the external device, acquiring the login information and the identifier included in the first access request;
• acquiring the address information and the access right information corresponding to the identifier with reference to the setting information;
• specifying access right of the user to each of the one or more services based on the login information and the access right information;
• transmitting information including the hyperlink of the service to which the user has the access right to the external device;
• and
• accessing information in the other unit based on a second access request including the address information in response to receiving a third access request to any service to which the user has the access right from the external device.