MER File – What is .mer file and how to open it?

Format and Function of MER Files

MER (Magnum Encapsulated Runtime) files are binary executable files used by the RSView32 development environment from Rockwell Automation. They contain compiled code and resources that can be executed on a runtime system to monitor and control industrial automation systems. MER files are typically created from RSView32 project files (.RSS). They include object code, application data, and configuration settings.

Use in Industrial Automation

MER files are essential in industrial automation systems where they serve multiple purposes. They provide a means to store and transfer compiled RSView32 projects, allowing for easy deployment and maintenance. By executing MER files on runtime systems, industrial engineers can monitor and control plant operations, create user interfaces, and manage data acquisition and control processes. They offer a reliable and efficient way to implement automation solutions in various industries, including manufacturing, energy, and water treatment.

Understanding MER Files

MER files are proprietary binary files used by Rockwell Automation’s RSView development software, which is employed in industrial automation applications. These files contain project data and configuration settings essential for machine control and human-machine interface (HMI) development. MER files are created within the RSView Studio development environment and can be opened, edited, and executed using the same software.

Opening MER Files

To open a MER file, you will need to have RSView Studio or a compatible software suite installed on your computer. Once the software is installed, follow these steps:

1. Launch RSView Studio.
2. Click on the “File” menu and select “Open.”
3. Navigate to the location of the MER file you want to open.
4. Select the file and click “Open.”

The MER file will be loaded into the RSView Studio development environment, allowing you to view, edit, and modify the project data and configuration settings. Once you have made the necessary modifications, you can save the changes and compile the project to create an executable file that can be deployed on the target industrial control system.

File Format and Usage

MER files are proprietary file formats used by Rockwell Automation’s RSView Development Runtime software. These files contain the compiled runtime application logic created with RSView Studio development software. RSView is an industrial automation software suite designed for developing and deploying human-machine interface (HMI) applications in industrial environments. MER files serve as the executable version of the HMI applications, allowing them to be deployed and run on runtime devices such as PLCs (programmable logic controllers) and operator interface terminals.

Contents and Structure

MER files encapsulate the binary code generated from the RSView Studio development project. They include all the necessary code and resources required to execute the HMI application, such as graphic elements, animation scripts, data tags, and scripts. MER files are organized in a structured format, with each section dedicated to a specific aspect of the HMI application. This structure enables efficient runtime processing and facilitates debugging if any errors occur during execution. By compiling the HMI application into MER files, RSView ensures faster execution and reduced development time compared to using interpreted script files.

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