The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 25, 1995
Filed:
Aug. 01, 1994
Applicant:
Inventors:
Hideaki Morita, Aichi, JP;
Teruyo Yamaguchi, Aichi, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395800 ; 364147 ; 364221 ; 3642305 ; 364260 ; 3642624 ; 364D / ;
Abstract
A system comprising a master station and one or plural slave stations connected in sequence wherein the master station utilizes a data processing module having an operation processor for cyclically executing a sequence program comprising a plurality of data link instructions. The execution of an individual data link instruction is protected by an interlock which remains in effect between the start of an instruction and its end. A macro instruction executable by the operating system is operative to automatically process the interlock, to avoid the necessity of including interlock processing in the sequence program itself.