How to Real time Monitoring with GX LogViewer

Real-Time Monitoring with GX LogViewer

GX LogViewer provides a robust solution for real-time monitoring, enabling you to capture and analyze data from Mitsubishi PLCs. This guide walks you through configuring GX LogViewer, starting real-time monitoring, and interpreting data for effective troubleshooting and management.

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Step 1: Setting Up GX LogViewer

To get started, you’ll need to install and configure GX LogViewer to connect with your Mitsubishi PLC.

1.1 Installing and Accessing GX LogViewer

1. Install GX LogViewer: Begin by installing GX LogViewer, often available with GX Works3 or as a standalone tool.
2. Launch GX LogViewer: Open the program from your applications or directly from GX Works3’s Tools menu.

1.2 Configuring Logging Parameters

1. Define Logging Targets: In GX LogViewer, specify devices or data points for monitoring, such as CPU usage, device states, or I/O channels.
2. Set Logging Intervals: Choose update intervals for logging. While shorter intervals capture more data, they increase CPU load; longer intervals are ideal for broader trends.
3. Specify Storage Location: Choose a location to save logs, ensuring enough space for extended monitoring periods.

Step 2: Connecting GX LogViewer to the PLC

Connecting GX LogViewer to the PLC is essential for data monitoring.

1. Choose Connection Method: In Communication Setup, select a method, such as Ethernet or USB, based on your setup.
2. Enter Connection Details: For Ethernet, input the PLC’s IP address; for USB, select the correct port from the list.
3. Establish Connection: Click Connect to start receiving data in real time.

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Step 3: Monitoring Real-Time Data

Once connected, you can now monitor live data to gain insights into system performance.

3.1 Using Real-Time Monitoring Functions

1. Live Data Display: GX LogViewer provides a live data feed for monitoring system performance, including device status, memory, and I/O states.
2. Graphical Trends: Graphs offer a visual representation of data trends, helping you quickly spot anomalies or spikes.
3. Event Log Monitoring: Events like system errors or device changes are logged, allowing you to monitor critical activities easily.

3.2 Setting Triggers and Alarms

GX LogViewer also enables the setup of custom triggers or alarms.

1. Define Thresholds: Set upper and lower limits for specific data points to notify you when values exceed acceptable ranges.
2. Enable Alarms: Configure alarms to provide real-time notifications if a threshold is breached.
3. Track Alarm Log: Review the Alarm Log to identify recurring issues, helping you understand potential problem areas.

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Step 4: Logging and Saving Data

Captured logs offer a historical record useful for diagnosing and optimizing your systems.

4.1 Saving Logs for Analysis

1. Start Logging: Use Start Logging to begin recording data from monitored points.
2. Save Periodically: For long sessions, save logs periodically to avoid data loss and ensure efficiency.
3. Export Logs: Export logs in CSV format for external analysis in other data tools or software.

4.2 Reviewing Historical Data

Accessing past logs helps with trend analysis or troubleshooting.

1. Open Past Logs: Select Open Log File in GX LogViewer to view previously saved data.
2. Analyze Trends: Use these logs to identify patterns or repeated system issues, informing better maintenance strategies.

Step 5: Disconnecting and Closing GX LogViewer

After completing monitoring, it’s crucial to disconnect properly.

1. Stop Logging: Click Stop Logging to end the data recording session.
2. Disconnect Communication: In Communication Setup, select Disconnect to close the session with the PLC.
3. Save and Close: Save any unsaved logs, then close GX LogViewer.

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Summary