New RungParse 4.0 adds tag trends →

The output is off.
RungParse shows you why.

PLC troubleshooting software for Studio 5000 and TIA Portal. It traces any output back to the input holding it off, explains the cause in plain English, and runs entirely offline on the plant laptop.

RungParse showing Chain2_FillBlocked rung 3 with Bottle_Sensor_1 and Fill_Permissive open and Fill_Enable offRungParse showing Chain2_FillBlocked rung 3 with Bottle_Sensor_1 and Fill_Permissive open and Fill_Enable off Root cause found · Fill_Enable Offline · read-only

Works with the platforms your plant runs on

Studio 5000ControlLogixCompactLogixTIA PortalS7-1500S7-1200ET 200SPFactoryTalk LinxRSLinx ClassicEtherNet/IPLogix v37

A new kind of troubleshooting tool. Built for controls engineers and maintenance techs, RungParse reads the program the way your best engineer does, and does it in seconds while the line is down.

Offline by design

No internet, no telemetry, no license server. It runs on the laptop that sits beside Studio 5000 on your OT network.

Evidence first

The parser proves the logic. The AI only explains it. Every answer cites the rung, the work order or the manual page it came from.

Strictly read-only

It never edits your project and has no way to write to a controller. Live values are read requests only, checked before they're sent.

Assistant

Ask in plain English. Get an answer you can check.

Drag a rung into the question or just type it. The engine finds the cause, and an AI model that runs on the laptop puts it into words.

Everything RungParse does →
JTMaintenance · Line 2
Chain2_FillBlocked · rung 3
On this computer · no internet needed
RungParse
RungParse writing an answer beside the ladder viewRungParse writing an answer beside the ladder view

Reduce downtime.
Every time.