STL to Ladder

Modeiko Solution

About this app

Ladder It helps PLC learners, technicians, and automation engineers read Siemens STL code and convert it into Ladder Logic.
Capture STL code from a camera or gallery image, review the OCR result, then convert it into a clear ladder-style visualization. The app also includes STL examples, instruction references, execution rules, conversion history, and a simple live ladder simulator.
Features:
Camera and gallery OCR for STL code
STL to Ladder Logic conversion
Siemens STL examples
STL writing and execution rules
Manual instruction reference
Conversion history
Ladder result explanation and symbols
Live ladder simulation with I/O variables

What’s new

Added stricter STL conversion validation to prevent invalid extra characters after PLC addresses.
Added support for inline STL labels in conversion, such as M002: T #TEMP6.
Added a new advanced STL reference example for dynamic DB access, AR1 pointers, indirect addressing, loops, and average calculation.
Improved conversion safety while still allowing valid inline comments after operands.
Add RLO State online value