Allen-Bradley PLC Viewer
View PLC Programs
Without Studio 5000
Open ACD, L5X, and RSS files directly in your browser. No Rockwell Automation license required. View ladder logic, tags, and AI explanations instantly.
- Allen-Bradley PLC programs are stored in ACD (ControlLogix/CompactLogix), L5X (export), and RSS (SLC 500) formats.
- plc.company opens all three formats without Studio 5000 or RSLogix installed.
- In our testing, ACD files parse in under 10 seconds for programs with 500+ routines.
- No per-seat or concurrent-use license required — one file subscription covers your whole team.
Supported Controllers
What You Can Do
Ladder Logic Viewer
See all rungs with color-coded instructions. Inputs, outputs, timers, counters — identified at a glance without opening Studio 5000.
Complete Tag Browser
Browse every tag with data types, descriptions, and UDT structures. Search and filter across controller-scoped and program-scoped tags.
AI-Powered Explanations
Get plain-English explanations of what each rung does. Useful for audits, knowledge transfer, and understanding unfamiliar code.
Cross-Reference & Signal Tracing
Find every location a tag is read or written across the entire project. Trace a signal from field device to output in seconds.
Network Topology & I/O Map
View I/O modules, rack layout, catalog numbers, and point counts. See every device in the system without hardware access.
Program Structure Navigator
Browse tasks, programs, and routines in a tree. Understand how the project is organized before diving into logic.
How to View Your PLC Program
Get your PLC file
Export your Allen-Bradley PLC program as an ACD, L5X, or RSS file from Studio 5000 or RSLogix 500.
Go to plc.company
Open your web browser and navigate to plc.company. No Rockwell Automation software required.
Upload your PLC file
Drag and drop your ACD, L5X, or RSS file onto the upload area. All Allen-Bradley formats are supported.
Analyze your program
View ladder logic, tags, routines, network topology, cross-reference data, and code quality metrics instantly.
Upload Your Allen-Bradley File
ACD, L5X, and RSS files supported — no Studio 5000 required
Drop your PLC file here
or browse to select
Questions
Is there an affordable Allen-Bradley PLC viewer?
Yes! PLC Company lets you view Allen-Bradley PLC programs at a fraction of the cost of Studio 5000. You can open ACD, L5X, and RSS files without purchasing expensive Rockwell software licenses. Simply upload your file and instantly browse ladder logic, tags, and program structure.
Can I view ControlLogix programs without Studio 5000?
Absolutely. PLC Company supports all ControlLogix controllers including the 5580, 5570, 5560, and 5550 series. Upload your ACD or L5X file and view all programs, routines, and tags without needing a $5,000+ Studio 5000 license. You'll also get AI-powered explanations to help you understand complex logic.
What Allen-Bradley controllers are supported?
PLC Company supports the full range of Allen-Bradley controllers: ControlLogix (1756 series), CompactLogix (1769 series), GuardLogix safety controllers, as well as legacy systems including SLC 500 and MicroLogix 1000/1100/1400. Both modern Logix files (ACD, L5X) and legacy RSS files are supported.
Do I need a Rockwell license to view PLC files?
No, you do not need any Rockwell software license to use PLC Company. Our online viewer works entirely in your browser and doesn't require Studio 5000, RSLogix 5000, or RSLogix 500. It's an affordable solution for maintenance technicians, contractors, and engineers who need to view programs without expensive license access.
Pro plans are now available
Unlock unlimited file uploads, AI-powered analysis, and advanced PLC tools.