公开(公告)号：US09798611B2

公开(公告)日：2017-10-24

申请号：US14904966

申请日：2014-04-25

Applicant: Mitsubishi Electric Corporation

Inventor： Kazuhiro Nakaminami

IPC: G06F11/00 ,  G06F11/07 ,  G05B19/05

CPC classification number: G06F11/0793 ,  G05B19/058 ,  G05B2219/14107 ,  G06F11/0736 ,  G06F11/0751 ,  G06F11/0772 ,  G06F11/0787 ,  G06F11/079

Abstract: A programmable logic controller includes an error detection unit, a data memory storing error occurrence information indicating, for each error kind, whether the error detection unit has detected an error, an error automatic cancellation processing unit determining whether an error factor of each error has been eliminated and, when the error factor has been eliminated, performing an error cancellation process including a process to change the error occurrence information to error non-occurrence, and an error-automatic-cancellation-permission determination unit referring to an error automatic cancellation permission setting and determining, when the error detection unit detects an error, whether the error is canceled by the error automatic cancellation processing unit on the basis of the error automatic cancellation permission setting, wherein the error automatic cancellation processing unit performs the error cancellation process on the error that the error-automatic-cancellation-permission determination unit has determined that the error automatic cancellation processing unit is to cancel.