Controls you can read.

Where the software ends.

Above the terminal lie the program, parameters and network — that I deliver. From the terminal onwards come wiring, connection and testing — qualified electricians deliver that. The line is not a formality: it decides who is liable for what.

Reference plant: a model, based on real bagging lines — not a client project.

The source code belongs to you.

I program controllers in Structured Text to IEC 61131-3 — on TwinCAT 3 and CODESYS, with C/C++ modules where needed. Every project lives in Git, is tested against a simulation model before the plant runs, and is handed over in full: commented source code without know-how protection, circuit diagrams, documentation. Whoever works on your plant after me does not start from scratch.

Platforms: TwinCAT 3, TwinCAT 2, CODESYS, Siemens LOGO!

 1rNettoKg := fbWaage.rBruttoKg - rTaraKg;
 2
 3CASE eSchritt OF
 4  E_Schritt.Tarieren:
 5    IF fbWaage.bStillstand THEN
 6      rTaraKg  := fbWaage.rBruttoKg;
 7      eSchritt := E_Schritt.Grobstrom;
 8    END_IF
 9
10  E_Schritt.Grobstrom:
11    bKlappeGrob := TRUE;
12    bKlappeFein := TRUE;
13    IF rNettoKg >= rSollKg - rFeinanteilKg THEN
14      bKlappeGrob := FALSE;
15      eSchritt    := E_Schritt.Feinstrom;
16    END_IF
17
18  E_Schritt.Feinstrom:
19    IF rNettoKg >= rSollKg - rNachstromKg THEN
20      bKlappeFein := FALSE;
21      tonBeruhigung(IN := FALSE);
22      eSchritt    := E_Schritt.Beruhigung;
23    END_IF
24
25  E_Schritt.Beruhigung:
26    tonBeruhigung(IN := TRUE, PT := T#400MS);
27    IF tonBeruhigung.Q THEN
28      // Nachstrom aus der letzten Abweichung lernen
29      rNachstromKg := rNachstromKg + 0.5 * (rNettoKg - rSollKg);
30      eSchritt     := E_Schritt.Endwaegung;
31    END_IF
32END_CASE

Before the last spare part is sold.

The SIMATIC S7-300 has been on discontinuation notice since 1 October 2025; Siemens is scheduled to supply spare parts until 2033. There is no obligation to retrofit — the reason to act is the spare-parts situation. I start with an inventory audit of fixed scope and then migrate in stages: to TwinCAT 3 or CODESYS, from TwinCAT 2 to TwinCAT 3, switched over during planned downtime.

An interface that stays silent in normal operation.

I build operator interfaces as web applications — for panel, browser and tablet — following the principles of ISA-101: greyscale in normal operation, colour only on deviation, from overview to detail in a few steps. Added to that: roles and permissions, an alarm concept that does not flash at every event, and machine data over MQTT — into your database, your dashboard, your analysis.

texni/ref/absack/betriebsart         "Automatik"
texni/ref/absack/waage/netto_kg      25.02
texni/ref/absack/linie/saecke_h      420
texni/ref/absack/sicherheit/nothalt  false

This page follows the same rule: colour means deviation. Red belongs to the heraldic animal — and to the emergency stop.

Data & AISecuring remote access

Restart only after reset.

Safety functions belong on certified safety technology. I have worked with it: TwinSAFE, SISTEMA calculation, risk assessment — most recently as part of a team through to the TÜV acceptance of a novel type of plant.

Protection against corruption

From 20 January 2027 the new Machinery Regulation (EU) 2023/1230 applies: control systems must be protected against corruption, and interventions in the software must be provable. That includes roles and permissions, authentication, a change log and remote access that does not become a back door. For products with digital elements the Cyber Resilience Act comes on top: reporting obligations since 11 September 2026, full application from 11 December 2027. Conformity is declared by the manufacturer — I supply the control side of it and document it.

Defence

Section 56 has a deadline.

The German Building Modernisation Act (Gebäudemodernisierungsgesetz) has been in force since 29 July 2026. Non-residential buildings with more than 70 kilowatts of heating, air-conditioning or ventilation capacity need a building automation and control system by 31 December 2029 — unless it is technically not feasible or economically unreasonable. Required, among other things, are ongoing monitoring and analysis of consumption, a vendor-independent, freely configurable interface and automatic lighting control.

I plan and program this with KNX and DALI, with energy monitoring and visualisation — and with an open interface that belongs to you.

Source: Gebäudemodernisierungsgesetz (GModG), § 56; BGBl. 2026 I No. 226.

Catalogue of works

In industry, in a team — before Texni Labs existed.

Without company names: the projects belong to the businesses I worked for.

What I do — and where the limit lies.

Elektroniker (electronics technician), specialising in energy and building technology: training in Munich, journeyman’s examination in 2023 before the Chamber of Crafts for Munich and Upper Bavaria — shortened to two years.

Planning, programming, software commissioning, visualisation and integration come from me. Work on the electrical installation itself — wiring, connection, testing — is done by your own qualified electricians or by a registered master electrician’s business (Meisterbetrieb), commissioned directly by you.

I prefer an honest limit to a convenient omission.

Product and brand names mentioned here — including Beckhoff, TwinCAT, TwinSAFE, EtherCAT, Siemens, SIMATIC, CODESYS and KNX — are trademarks of their respective owners. They are used solely to describe the service; no partnership or certification exists.

Tell me about your plant.

A first conversation without sales pressure: what is running, what is stuck, and what has to happen by when.

Legal owner

Texni Labs

Document no.

TXL-STG-001

Date of issue

2026-10

Sheet

9 / 9

Title

Controls — service documentation

Approved

on order

Created

A. Makarov

Document type

Service documentation

Plant · location

=TEXNI +MUC

Rev.

A

Standard

DIN EN 81346-2:2010-05

Replaces

Smart Home