Title:
CYCLIC INTERRUPTION DETECTING CIRCUIT AND CYCLIC INTERRUPTION ABNORMALITY DETECTION METHOD
Document Type and Number:
Japanese Patent JP2004328922
Kind Code:
A
Abstract:
To solve the problem wherein operational abnormality in a servo motor likely occurs, due to the occurrence of the dropout of commands.
In a network servo control unit, having a transmission circuit that performs communication, in synchronization with a cyclic interruption output that is outputted in synchronization with a system clock, counting is started at timing, when the cyclic interruption output is generated. There is provided in the unit a status output circuit that outputs the pulse dropout of the cyclic interruption output and an anomalous output status to the transmission control circuit, by using a diagnostic timer that generates a diagnostic pulse and the diagnostic pulse generated by the diagnostic timer.
Inventors:
IKEDA FUMIAKI
Application Number:
JP2003121865A
Publication Date:
November 18, 2004
Filing Date:
April 25, 2003
Export Citation:
Assignee:
YASKAWA ELECTRIC CORP
International Classes:
G05B23/02; H02P7/00; H02P29/02; (IPC1-7): H02P7/00; G05B23/02