Controller and control program updating method

A controller according to an embodiment includes a main processing unit and a monitoring unit. The main processing unit executes a control program. The monitoring unit monitors the main processing unit by a first monitoring method for transmitting, to the main processing unit, a transmission content...

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Bibliographic Details
Main Authors Umeyama, Shigeto, Mori, Naoto
Format Patent
LanguageEnglish
Published 17.03.2020
Subjects
CALCULATING
COMPUTING
CONTROL OR REGULATING SYSTEMS IN GENERAL
CONTROLLING
COUNTING
ELECTRIC DIGITAL DATA PROCESSING
FUNCTIONAL ELEMENTS OF SUCH SYSTEMS
MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS
PHYSICS
REGULATING
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Summary:A controller according to an embodiment includes a main processing unit and a monitoring unit. The main processing unit executes a control program. The monitoring unit monitors the main processing unit by a first monitoring method for transmitting, to the main processing unit, a transmission content corresponding to a question and for evaluating an answer to the question from the main processing unit. The main processing unit causes, when receiving an updating request of the control program, the monitoring unit to perform switching from the first monitoring method into a second monitoring method for monitoring a watchdog signal of the main processing unit.
Bibliography:Application Number: US201715837208