LGH File – What is .lgh file and how to open it?


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LGH File Extension

HMI Historical Log File – file format by Wonderware

LGH (HMI Historical Log File) is a file extension developed by Wonderware for its InTouch HMI software. It stores historical data collected from HMI tags, providing a record of process events and alarms for later analysis and troubleshooting.

LGH File Format

A file with the .LGH extension is an HMI Historical Log File used by Wonderware’s InTouch software. It contains a record of events and alarms that have occurred in the system. HMI (Human-Machine Interface) applications are used to monitor and control industrial processes, and they often generate log files to record important events. These log files can be used for troubleshooting, auditing, and reporting purposes.

LGH files are typically large and complex, and they can be difficult to open and read without the appropriate software. However, there are a number of free and commercial tools available that can be used to view and analyze LGH files. These tools can help users to identify errors and trends, and they can also be used to generate reports and graphs.

Opening LGH Files with Wonderware Software

LGH files are HMI (Human Machine Interface) Historical Log Files generated by Wonderware software, a leading provider of industrial automation and process control solutions. To open LGH files, you will need the Wonderware Historian application, which is part of the InTouch HMI suite. The Historian application allows users to view, analyze, and archive historical data from various sources, including LGH files.

To open an LGH file in Wonderware Historian, navigate to the File menu and select Open. In the file explorer window that appears, browse to the location of the LGH file and select it. The LGH file will be loaded into the Historian application, where you can view its contents, create reports, and perform data analysis.

Alternative Methods for Opening LGH Files

Apart from Wonderware Historian, there are a few third-party software tools that can open and view LGH files. These tools may provide additional features and functionality compared to the Wonderware Historian application. One such tool is LogView Plus, which is a comprehensive log file viewer and analysis software. LogView Plus supports a wide range of log file formats, including LGH files, and offers advanced filtering, sorting, and analysis capabilities.

Definition and Purpose of LGH Files

LGH files, also known as HMI Historical Log Files, are a proprietary file format utilized by Wonderware, a leading provider of industrial automation software. These files are specifically designed to store historical data recorded by Human Machine Interface (HMI) systems employed in industrial settings. HMI systems serve as the interface between operators and industrial machinery, allowing for monitoring, control, and data acquisition. LGH files play a critical role in maintaining a historical record of process data, alarms, and events, enabling users to analyze trends, troubleshoot issues, and improve operational efficiency.

Structure and Content of LGH Files

LGH files follow a structured format that ensures data integrity and efficient retrieval. They are typically organized into multiple sections, each containing specific types of information. One section may store process data, such as temperature, pressure, and flow rates, recorded over time. Another section might hold alarms and events, including timestamps, severity levels, and associated descriptions. Additionally, LGH files can contain meta-information about the HMI system and its configuration, such as tag names, units of measurement, and alarm limits. This comprehensive data storage allows users to gain a comprehensive understanding of past operations and identify areas for optimization.

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