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:
Mar. 06, 2018
Filed:
Sep. 09, 2013
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Jorge A. Basulto, Oconomowoc, WI (US);
Charles D. Payne, Mukwonago, WI (US);
Harnischfeger Technologies, Inc., Wilmington, DE (US);
Abstract
Systems and methods for synchronizing time between multiple systems on a mining machine. The system includes a programmable logic controller (PLC) for controlling the mining machine and for transmitting a time to synchronize computer subsystems on the machine. The PLC includes a system clock that is programmed to operate on local time. A battery pack is connected to the PLC to allow the system clock to function continuously, even when the machine is turned off. Computer subsystems request and receive time updates from the PLC. A local time on each computer subsystem is determined based on the time update received from the PLC. Each computer subsystem includes a time zone parameter set to Coordinated Universal Time (UTC) and a Daylight Saving Time (DST) parameter that is disabled. Accordingly, the local time on each computer subsystem is set to the time update value received from the PLC.