Manual assembly of common algorithms
PID loops, interlocks, pump groups, and ventilation modes are rebuilt from scratch too often.
STRUCTA.
IEC 61131-3 / Structured Text
AI tooling for PLC Structured Text development
Describe the control algorithm in engineering language. Structa drafts ST code, explains the logic, and helps validate platform compatibility.
IEC validation
Logic assembled
draft in 42 sec.
STRUCTA / ST WORKBENCHFB_PumpReserve.st
Control intent0%
>|
1
Intent parsed
ST generated
IEC check
Codesys-ready
Where engineers lose time today
Structa targets the repetitive layer: standard control blocks, platform adaptation, and first-pass ST validation.
Different dialects and libraries
Codesys, OWEN, Siemens, and OEM controllers package the same engineering logic differently.
Late errors during commissioning
Missing states, timer issues, and risky fault transitions often appear on site, when fixes are expensive.
From description to reviewable ST code
Describe
Define the object, limits, signals, faults, and target platform.
Generate ST code
Structa drafts structured code with comments and readable decomposition.
Validate
The system highlights risks, platform differences, and places for manual review.
Process-to-Code
Plant signals become a reviewable ST block
Structa connects the engineering intent, PLC inputs, and fault states into one readable structure.
Pump stationLIVE SIGNALS
Pressure loop
PressureLow
PumpFault_A
PumpFault_B
Reserve starts when A fails, alarm resets through a separate input
ST outputFB_PumpReserve.st
Generated Structured Text
1Pump_A_Cmd := FALSE;2Pump_B_Cmd := FALSE;3IF ResetAlarm THEN AlarmReserve := FALSE; END_IF;4ReserveActive := Enable AND PressureLow AND PumpFault_A;5IF ReserveActive AND NOT PumpFault_B THEN6Pump_B_Cmd := TRUE;7AlarmReserve := TRUE;8END_IF;
Signals mapped
Fault chain checked
Manual review points
Capabilities for engineering teams
ST generation from algorithm descriptions
Logic explanations for blocks and states
Adaptation for target PLC platforms
Timer, fault, and transition checks
Templates for common engineering units
Version history and decision trace
Where Structa is useful first
Individual heating substation
Weather compensation, DHW/heating loops, sensor faults, and pump reserve logic.
Signals
T_Outdoor
T_Supply
PumpFault
ValveFeedback
Checks
weather curve
sensor fallback
pump reserve
ST draftITP
1SupplySP := HeatCurve(T_Outdoor);2IF SensorFault THEN3ModeSafe := TRUE;4END_IF;5ValveCmd := PID_Heat(SupplySP, T_Supply);
platform profile
manual review
draft only
Platforms in focus
We are starting with automation stacks common across Russia and the CIS.
Codesys
ОВЕН
Siemens
Rievtech
Atekon
Early access for engineers and CTOs
The waitlist helps us prioritize platforms, standard objects, and validation scenarios.
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early access requests
"If it removes even 30% of repetitive work around common blocks, the team will feel it quickly."
"The important part is that the product speaks ST and platform constraints, not just AI automation."
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AI for Structured Text, built with respect for industrial automation.
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