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PLC Programming

Control software for automation lines and special machinery — vendor-independent, to IEC 61131-3, safety-related on request. From first development through to retrofit.

PLC programming — automation engineer with laptop at the control cabinet AI-generated
What we do

Control software that stays maintainable.

We develop, program and document control software for your systems — to IEC 61131-3 on all major platforms (Siemens TIA Portal, Beckhoff TwinCAT, Rockwell, CODESYS). Standard, safety and drive control from a single team.

Our standard: modularly structured software, clean code, meaningful comments — so that your maintenance technician can still work with the code in five years' time, and extensions are possible without a rewrite.

As a standalone service or integrated with our other services: electrical engineering, electrical assembly, robot programming.

Core deliverables

What we implement for you

Control development

Programming to IEC 61131-3 — structured software using LD, FBD, ST and SCL. Modular, reusable, documented.

Safety programming to ISO 13849

Safety-related programming on F-CPUs (Siemens Safety Integrated, TwinSAFE) — with clean separation of standard and safety logic.

Drive & robotics integration

Integration of servo drives (Sinamics, AX series, MoviGear), robot controllers and fieldbus peripherals via PROFINET, EtherCAT, PROFIsafe and FSoE.

HMI & visualisation

Operator panels (Siemens Comfort/Unified, Beckhoff TwinCAT HMI, Weintek) with clearly structured recipes, alarms and operator guidance.

IT/OT connectivity

MQTT, OPC UA and REST — for connection to NEXOS.DSP, MES systems and ERP.

Commissioning & handover

FAT and SAT to a clear test checklist, operator training, handover documentation with structured in-code comments.

Platforms & protocols

What we work with

Vendor-independent — you pick the platform, we bring the know-how.

Siemens TIA Portal
S7-1200, S7-1500, ET 200SP; Safety Integrated on F-CPU; PROFINET, PROFIsafe, PROFIenergy — our main working environment.
Beckhoff TwinCAT
TwinCAT 3, EtherCAT, TwinSAFE, C++ / Structured Text — for high-performance, high-speed applications.
Rockwell / Allen-Bradley
ControlLogix, CompactLogix, GuardLogix — particularly for customers with an AB standard.
CODESYS
CODESYS-based controllers from Wago, Berghof, Eaton and others — a cross-vendor IEC 61131-3 environment.
Communication
OPC UA (server & client), MQTT, REST, Modbus TCP/RTU, IO-Link — flexible connection to higher-level systems.
Fieldbuses
PROFINET, EtherCAT, PROFIsafe, FSoE, EtherNet/IP, Modbus — design and commissioning of all major industrial protocols.
Why NEXOS.Group

What sets us apart

From one source with electrical engineering & robotics

We program controls, safety, drives and robots in one team — interlocked with our electrical engineering and robot programming.

Structured & maintainable code

No copy-paste chaos. We write modular, commented and documented code — your maintenance technician will still find their way around in five years' time.

Ready for digitalisation

OPC UA and MQTT as standard — your system connects directly to MES, cloud monitoring or NEXOS.DSP without detours.

Control software needed?

New system, retrofit or extension — we will review your control requirements in a no-obligation initial discussion.

Request an initial call →