US Patent 10063553 Programmable display

A programmable display for connection to a control device includes: a user management unit configured to identify a user accessing the programmable display; a generation unit configured to generate an interface screen containing information from the control device in accordance with privileges assigned the user identified by the user management unit; a display unit configured to output the interface screen; a connection management unit configured to, in response to a request for access from a user on an external device, establish a connection with the external device on the basis of identification of the user by the user management unit, and to send the interface screen to an external device with which a connection is established; and the user management unit prohibits simultaneous access to the programmable display by a plurality of users each having different privileges assigned.