Open L5X Files
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View ControlLogix and CompactLogix programs without expensive software licenses. Upload your L5X export and instantly browse ladder logic, tags, and program structure.
Supported Logix Platforms
The Studio 5000 Export Format
L5X is an XML-based export format from Rockwell Automation's Studio 5000 Logix Designer. It provides a complete, human-readable representation of your PLC project including:
- Controller configuration and properties
- Programs and routines (ladder, function block, structured text)
- Controller-scoped and program-scoped tags
- User-Defined Data Types (UDTs)
- Add-On Instructions (AOIs)
- Module configuration and I/O mapping
No Studio 5000 License Required
View programs without $5,000+ software costs
Instant Access
Open L5X files in seconds, right in your browser
AI-Powered Explanations
Understand complex logic with plain-English summaries
Perfect for Code Review
Share programs with team members who lack licenses
Full L5X Support
Everything you need to understand ControlLogix and CompactLogix programs
Ladder Logic Visualization
Color-coded rungs show inputs, outputs, timers, counters, and math instructions at a glance.
Complete Tag Browser
Browse controller and program-scoped tags. See data types, descriptions, and UDT structures.
AI Explanations
Get plain-English explanations of what each rung does. Choose friendly, technical, or operator modes.
Program Structure
Navigate tasks, programs, and routines in a hierarchical tree view. See how code is organized.
Secure & Private
Files are encrypted in transit, processed on isolated infrastructure, and accessible only to your account.
215+ Instructions
Full support for bit logic, timers, counters, math, motion, and more. All rendered clearly.
Cross-Reference & Signal Tracing
Find where any tag is used across the entire project. Trace signals from input to output in seconds.
Device Classification
Automatic identification of sensors, motors, valves, and safety devices from tag naming conventions.
Safety & Alarm Analysis
Detect safety-critical logic and alarm conditions. Full GuardLogix support with safety routine identification.
Program Comparison
Diff two versions of your program side by side. See exactly what changed between revisions.
Training Document
Auto-generated operator training covering safety procedures, device reference, alarm response, I/O maps, and daily operations.
Hardware Browser
Browse I/O modules, network topology, and rack layout. See catalog numbers, point counts, and module configuration.
I/O Visualization
Interactive rack view showing every I/O point, signal names, and LED status. Click any point to see its tag assignments.
Frequently Asked Questions
What is an L5X file?
An L5X file is an XML-based export format from Studio 5000 Logix Designer. It contains the complete PLC project including controller configuration, programs, routines, tags, user-defined types, and Add-On Instructions in a human-readable format.
How do I create an L5X file from Studio 5000?
In Studio 5000, go to File > Export and select 'Export Program' or 'Export Controller'. Choose L5X as the format. You can export the entire project or specific components like individual programs or Add-On Instructions.
Can I view L5X files without Studio 5000?
Yes! PLC Company lets you open and view L5X files directly in your browser without needing Studio 5000 installed. You can browse all programs, routines, tags, and get AI-powered explanations of ladder logic.
Which controllers support L5X files?
L5X files are supported by all Logix family controllers: ControlLogix (1756 series), CompactLogix (1769 series), and GuardLogix (safety controllers). The format works with all firmware versions that support Studio 5000.
What's the difference between L5X and ACD files?
L5X is an XML-based export format that's text-readable and great for version control. ACD is the native binary project format that contains additional information like online edits and pending changes. Both contain your full PLC program.
Is my L5X file secure when I upload it?
Yes. Your L5X file is encrypted in transit and processed on secure, isolated infrastructure. Parsed data is stored in your private account and is never shared with third parties. You can permanently delete your files at any time.