Invention Grant
- Patent Title: Communication system with master and slave exchanging control data in predetermined communication period
- Patent Title (中): 通信系统具有主，从交换控制数据的预定通信时段
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Application No.: US12474028Application Date: 2009-05-28
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Publication No.: US07769935B2Publication Date: 2010-08-03
- Inventor: Mamoru Fukuda , Tatsuhiko Satou
- Applicant: Mamoru Fukuda , Tatsuhiko Satou
- Applicant Address: JP Fukuoka
- Assignee: Kabushiki Kaisha Yaskawa Denki
- Current Assignee: Kabushiki Kaisha Yaskawa Denki
- Current Assignee Address: JP Fukuoka
- Agency: Ditthavong Mori & Steiner, P.C.
- Priority: JP2006-352122 20061227
- Main IPC: G06F13/00
- IPC: G06F13/00
Abstract:
A master includes a unit configured to register, for each slave, an expected communication time needed to exchange control data; a unit configured to register a slave in which a communication error is detected during exchange of the control data in a communication period; and a unit configured to re-execute exchange of the control data with the registered slave in the same communication period as that in which the communication error is detected. The unit configured to re-execute exchange of control data calculates a remaining resending time that can be used to re-execute exchange of the control data and, when the remaining resending time is longer than the expected communication time of the registered slave, resends the control data.
Public/Granted literature
- US20090248933A1 MASTER/SLAVE COMMUNICATION SYSTEM Public/Granted day:2009-10-01
Information query
