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:
Oct. 24, 1978
Filed:
Dec. 14, 1976
Timothy Bielawski, Maple Heights, OH (US);
Odo J Struger, Chagrin Falls, OH (US);
Lawrence W DeLong, Stow, OH (US);
Allen-Bradley Company, Milwaukee, WI (US);
Abstract
A data handling module connects to the memory of a programmable controller and operates to periodically steal memory cycles from the controller processor to read data out of the memory and write data into it. The data handling module includes a microprocessor which is programmed to perform a number of functions. The function to be performed is indicated by a control status register which is set by the control program and which is periodically examined by the data handling module. The status of the data handling module is also indicated by a register which is examined by programmable controller instructions. In response to directions indicated by the control status register, data files may be transferred between a data file storage and an active data file storage area and messages may be coupled to a TTY which connects to the data handling module.