Patent ID: 8423808
Filing Date: 2013-04-16
Classification: G05B

Abstract:
1. A control device comprising: a communication unit which has a switch function of switching the control device into a power saving mode, the communication unit communicating with an upper terminal via a first network; a mode control unit which controls switching the communication unit into the power saving mode, the control being made using a network control library which is generated by a programming language; a memory unit which stores a monitoring time and a frame classification as a mode control parameter, the monitoring time being a time for monitoring a transmission-reception frame transmitted and received by the communication unit, the frame classification designating a group of frames which are subject to the monitoring; and a transmission-reception frame information management unit which manages a frame-related information that includes the monitoring time and the frame classification, wherein the network control library is a software component which has a function of outputting a value which is necessary to control switching the control device into the power saving mode, the control being made according to at least one input value, the mode control unit comprises: the power saving unit determines whether or not in the monitoring time there is performed at least one of transmission and reception of the transmission-reception frame classified in the group of frames subject to the monitoring, the determination being made based on the frame-related information, and the power saving unit selects the power saving mode if in the monitoring time there is not performed the at least one of transmission and reception of the transmission-reception frame.