Title:
DEVICE INFORMATION COLLECTION METHOD FOR CONTROL
Document Type and Number:
Japanese Patent JP3312496
Kind Code:
B2
Abstract:
PURPOSE: To provide a device information collection method for control in which control information of state change is extracted from the device without taking much time.
CONSTITUTION: A controller 10 is provided with an update information monitor section 12 and a controlled device 20 is provided with an update information storage section 22, control information memories 15, 25 of the controller 10 and the controlled device 20 are configured to have an area updating and storing the state change in plural sets of control information detected by the update information storage section 22 and when a state change takes place in any of the plural sets of control information monitored by the controlled device 20, the update information storage section 22 detects and stores the state change, and when the update information monitor section 12 of the controller 10 receives the changed control information through succeeding polling, the controller 10 makes a request of the content of the control information subject to state change only to the controlled device 20 and when the controller 10 receives the control information, the controller 10 overwrites the information onto the storage content in the control information memory 15 to update the stored content.
Inventors:
Shiyuki Sasaki
Application Number:
JP20702094A
Publication Date:
August 05, 2002
Filing Date:
August 31, 1994
Export Citation:
Assignee:
富士通株式会社
International Classes:
H04L69/40; G06F13/00; H04Q9/00; (IPC1-7): H04Q9/00
Attorney, Agent or Firm:
Junichi Yokoyama