Frequently Asked Questions
General
What is PLCflow?
PLCflow is a cloud-based platform that automates PLC code generation, analysis, and management for Allen-Bradley ControlLogix and CompactLogix systems. It turns spreadsheets and L5X files into production-ready ladder logic, tag definitions, and supporting files.
Who is PLCflow for?
Controls engineers, automation engineers, system integrators, and anyone who programs Allen-Bradley PLCs using Rockwell Studio 5000. Whether you're building a new system or maintaining an existing one, PLCflow saves time on the repetitive parts of the job.
Do I need to install anything?
No. PLCflow is entirely web-based. Open it in your browser, upload your files, and start generating. No plugins, no desktop software, no Studio 5000 add-ins.
Which PLC platforms are supported?
PLCflow currently supports Allen-Bradley ControlLogix and CompactLogix platforms that use Rockwell Studio 5000 and the L5X file format. GuardLogix safety programs are supported in the Code Analyzer.
Products
What file formats does PLCflow work with?
Input: L5X (Rockwell PLC programs), XLSX/XLS/CSV (spreadsheet definitions). Output: L5X (ladder logic, AOIs, UDTs), CSV (tag definitions), JSON (Ignition UDTs).
Can I use my existing spreadsheets?
Yes. PLCflow accepts standard Excel and CSV files. Download a template from any module to see the expected format, then adapt your existing I/O lists to match.
What does the Code Analyzer check for?
The AI-powered Code Analyzer reviews your L5X files for bugs, anti-patterns, naming convention issues, unused tags, structural problems, and opportunities for improvement. It provides a health score and rung-by-rung recommendations.
Can I save and reuse my configurations?
Yes. Every generation module supports saving and loading configurations. Save your device definitions, alarm setups, or duplication rules and reload them on any future session.
Does PLCflow replace Studio 5000?
No. PLCflow generates the files you import or paste into Studio 5000. It automates the code creation step - you still use Studio 5000 for editing, testing, downloading to the PLC, and going online.
Security & Data
Is my PLC code safe?
Yes. All files are encrypted in transit (TLS) and at rest. Your data is isolated to your account - no other user can access your files, tags, or generated code.
Do you store my uploaded files?
Uploaded files are processed for generation or analysis and stored temporarily in your session. Generated output files are available for download during your session. We do not retain your PLC files beyond what's needed to provide the service.
Who has access to my data?
Only you. PLCflow does not share your files, tags, or generated code with third parties. Our AI features use Anthropic's Claude for analysis - your data is not used for model training.
Billing
Is there a free plan?
Yes. The Free tier includes access to core modules (I/O Code, Alarm Code, UDT Converter, UDT Generator) with 10 generations per month. No credit card required.
How does the free trial work?
When you sign up, you get 14 days of full Pro-tier access. After the trial, you're automatically moved to the Free tier - no charge, no surprise billing. Upgrade to Pro or higher whenever you're ready.
Can I cancel anytime?
Yes. Cancel from your billing settings at any time. Your subscription remains active until the end of your current billing period, then reverts to the Free tier.