IEC 61131 to IEC 61499 Conversion
Converting IEC 61131-3 programs to IEC 61499 is the bridge from scan-based, vendor-locked control to distributed, event-driven, portable applications. Ri Tech’s transpiler parses your IEC 61131-3 program organization units and generates equivalent IEC 61499 basic function blocks — complete with event interfaces, ECC state machines and algorithms — so your validated logic carries forward instead of being rewritten.
Why 61499
What you unlock by moving to IEC 61499
Distributed execution
IEC 61499 applications distribute across devices, so control logic isn't bound to a single scan-based CPU.
Event-driven model
Function blocks execute on events rather than a fixed scan, matching modern, reactive control architectures.
Vendor portability
The IEC 61499 standard targets portable applications, reducing dependence on any one runtime.
How it works
From 61131-3 POUs to 61499 function blocks
The transpiler re-expresses your programs, function blocks and functions in the IEC 61499 execution model while preserving what they do.
- Parses IEC 61131-3 Structured Text directly, and Ladder, FBD and SFC via PLCopen XML and Allen-Bradley L5X exports.
- Generates IEC 61499 basic function blocks with event interfaces, ECC state machines and algorithms.
- Preserves the semantics of the source logic through the conversion.
- Outputs IEC 61499-compliant .fbt files and a downloadable project ready for review.
FAQ
IEC 61131 to IEC 61499 questions
Can I automatically convert IEC 61131-3 to IEC 61499?
Yes. Ri Tech's transpiler parses your IEC 61131-3 program organization units — programs, function blocks and functions — and generates equivalent IEC 61499 basic function blocks, including the event interfaces, ECC state machines and algorithms the 61499 execution model requires.
Which IEC 61131 languages can be converted?
Structured Text is parsed directly. Ladder (LD/RLL), FBD and SFC are supported through PLCopen XML and Allen-Bradley L5X exports, and RSLogix 500 ladder is also accepted — so most real-world 61131-3 projects can be brought in.
Does the conversion preserve my control logic?
Yes — the goal is to carry your validated logic forward, not to reinvent it. The transpiler preserves the semantics of the source POUs while re-expressing them in the event-driven IEC 61499 form, so you keep proven behavior while gaining distribution and portability.
What output does it produce?
IEC 61499-compliant function block type files (.fbt) that you can open in a 61499 engineering environment, plus a downloadable project you can review and deploy.
Transpile your first POU free
Create a free Ri Tech account and convert one of your own IEC 61131-3 programs to IEC 61499 — download included. Modernizing legacy hardware first? Start with legacy PLC modernization.