Pinpoint OPC Communication Failures with Network Monitoring

OPC communication drops can feel like chasing ghosts—one moment, everything runs smoothly, and the next, your data freezes, your system crashes, or your application stalls. When traditional tools fall short, OPC Expert’s Network Monitoring shows you precisely what’s breaking down and where.

Whether you’re dealing with intermittent packet loss, out-of-order data, or mysterious outages, this feature gives you real-time, actionable insight into your industrial network’s health.

Let’s start with knowing when and where OPC communication is failing.

Network Monitoring in OPC Expert captures:

• Lost packets
• Out-of-order packets
• Communication drops

And it does this using UDP-based communication—not TCP. Why does that matter? Because TCP’s built-in error correction can hide the symptoms. UDP strips that away, giving you raw, unfiltered network data that reveals problems as they happen.

See the exact message throughput and connected duration in real-time on your local machine below.

This view provides metrics like:

• Messages sent

• Connection duration

• Message speed

• Error codes (if any)

Unlike generic tools that say, “The network is slow,” OPC Expert’s Network Monitoring breaks it down into components you can act on:

• Persistent Testing: Run tests for hours or days to uncover intermittent issues.
• Packet Throughput Throttling: Simulate high network loads to see when and how your infrastructure breaks down.
• Packet Size Modification: Change the size of transmitted packets to understand how your network handles different communication loads.

Together, these tools help answer critical questions:

• Is my router dropping packets under load?
• Does this switch choke on small packet sizes?
• What’s the maximum data rate before things fall apart?

In the screenshot above, you can see UDP settings like outgoing message size and transmission speed, which are adjustable in real time.

You don’t need to be an IT expert. OPC Expert runs without installation, doesn’t touch the Windows Registry, and is safe for any system. That means you can fire it on any machine in the field or a plant floor without triggering security alarms or waiting for IT approvals.

Whether you’re a:

• Maintenance Technician trying to stop system stalls,
• Automation Engineer chasing down flaky connections, or
• System Integrator validating an install…

… you’ll appreciate how this tool:

• Surfaces underlying network issues that others miss
• Works quietly alongside your production systems
• Delivers results in simple summary reports—no packet sniffing degree required

Refer to the image below for a clean layout of server information and packet settings.

If you’ve ever had to tell your team, “It’s probably the network,” without being able to prove it, OPC Expert’s Network Monitoring changes that. It replaces guesswork with concrete data you can act on.

Lost packets are logged in real-time.

Throughput bottlenecks are measured.

Failures are pinpointed at the moment they occur.

This tool is designed for automation professionals who need answers quickly. It requires no installation and has no hidden complexity. It’s free to download and safe to run on any system, making it an essential part of any industrial troubleshooting toolkit.