Patent ID: 7177715

Claim:
A remote maintenance method for a system in which an industrial device for executing a specific process and an operation device for maintaining said industrial device are connected to each other via a network, characterized in that said operation device transmits command information indicating a maintenance command to said industrial device and said industrial device comprises a computer for executing a program for maintaining said industrial device according to received command information, said industrial device holds a user of said operation device and attribute information indicating a degree of art held by said user in connection with each other, holds condition information indicating a condition of said attribute information necessary to execute said process according to said command information, reads said attribute information and said condition information when said industrial device receives said command information from said operation device, executes said process according to said command information, generates charge information indicating a value for maintenance according to contents of said executed process and the degree of art of the user, and outputs a whole or a part of said generated charge information to an output device of said industrial device.