RungTrace
For teams who need to inspect, search, and troubleshoot ControlLogix and CompactLogix logic without spending thousands on another full Rockwell Studio 5000 license.
RungTrace
When the call is "Motor M300 is not running," RungTrace takes you from a site-wide search to the exact blocking condition in minutes.
Enter PLC addresses, choose saved favorites, or use an optional RSLinx driver to discover and connect to multiple controllers at once. Then search controller- and program-level tags to find exactly where Motor M300 is controlled.
Add the relevant tags to one unified watch list, monitor them in real time, and safely write values back when troubleshooting calls for it.
Select any tag on the rung. Tag Trace follows every write, even through Add-On Instructions, and reveals the bit holding the process back.
Built for support engineers, controls professionals, and maintenance teams who need to cover more equipment and reach the answer faster.
Graphically browse ladder logic and function block diagrams, or view structured text and AOIs, without a Studio 5000 license. Monitor FBD values; monitor, toggle, and edit supported values directly in ladder logic.
Select a tag anywhere on a rung and instantly build a visual flow of everything that writes to it. RungTrace follows the chain through routines and AOIs until the bit preventing the system from enabling is clear. Traditional cross-reference remains available when you need it.
Trend tags from multiple PLCs on one chart, with selectable sampling as fast as 50 ms. Actual rates vary with network conditions and workload. Pause, inspect, compare, and export the moment the process goes wrong.
Turn high-speed machine operations into a color-coded Gantt chart. Expose missed steps, sequence delays, and timing drift that happen too quickly to catch in live logic.
Connect to multiple PLCs, build watch lists, see live values and read quality, and keep writes behind an explicit enable control while you troubleshoot.
No installer. No runtime dependencies. No mandatory RSLinx setup. RungTrace is a lightweight, self-contained Windows application you can keep on your laptop or USB drive, and deploy without another software stack to manage.
Equip one engineer or an entire support team with powerful PLC troubleshooting tools at a fraction of the cost of a Studio 5000 license.
Need to purchase through your company? RungTrace supports formal quotes, purchase orders, invoices, ACH payments, checks, and approved payment terms.
For one controls professional working across machines and sites.
For controls teams purchasing 5 to 25 annual seats.
Flexible deployment for facilities and engineering groups.
Secure license activation and management powered by DevoLens. Internet access is required once for initial activation; RungTrace then works fully offline. Annual access ends when a subscription expires.
Corporate purchasing
For purchasing departments that need a formal procurement flow, submit a business purchase request and we will prepare the quote, invoice, and any vendor documentation details manually.
Payment terms are subject to approval.
Checking GitHub for the latest RungTrace release.
Windows 10 or 1164-bit system recommended.
Network accessYour PC must be able to reach the PLC over EtherNet/IP.
L5X exportRequired for logic viewing, cross-reference, Tag Trace, and other project-aware analysis.
Internet accessRequired once for initial license activation. The application works offline afterward.