Which PLC systems do you program?

Siemens (SIMATIC S7, TIA Portal), Rockwell Automation (Allen-Bradley, Studio 5000), Beckhoff (TwinCAT), and Schneider Electric (EcoStruxure). We can ramp up on other systems on request.

What does 'safety PLC' mean?

A safety PLC (F-PLC) is a special controller certified for executing safety functions (e.g. emergency stop). Programming requires special qualifications to meet the Safety Integrity Level (SIL) requirements.

Do you also offer HMI/SCADA?

Yes — HMI and SCADA creation is an integral part of our automation solutions.

PLC Programming

Vendor-independent PLC programming and HMI development — Siemens TIA Portal, PCS7, Rockwell Studio 5000 and Beckhoff TwinCAT. Per IEC 61131-3, from concept through commissioning.

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What is PLC programming?

What is it?

The Programmable Logic Controller (PLC) is the brain of an automated plant. PLC programming covers the creation of control logic that coordinates all machine functions, process sequences, interlocks, and safety functions.

Why does it matter?

A professionally programmed PLC is critical to a plant's efficiency, reliability, and safety. Clean, structured, and well-documented programming makes commissioning, troubleshooting, and future expansions much easier.

Your advantage with IOTECH

IOTECH offers vendor-independent expertise on all major PLC platforms (Siemens TIA Portal, Rockwell Studio 5000, Beckhoff TwinCAT). We build modular, reusable software blocks per IEC 61131-3.

Our development process

We follow a structured approach to deliver high-quality software.

Requirements analysis & specification

Joint development and definition of all control functions and interfaces.

Software design & architecture

Design of a modular, scalable software structure.

Programming

Implementation of control logic in IEC 61131-3 languages (FBD, LD, ST).

Simulation & test (FAT)

Comprehensive software testing before delivery as part of a Factory Acceptance Test.

Commissioning & optimization (SAT)

On-site software deployment, Site Acceptance Test, and process parameter tuning.

Application areas

We automate processes in the most diverse industries.

Process plants

Control of batch processes, recipe management, and continuous processes.

Machinery & plant engineering

Control of individual machines and complex production lines.

Building automation

Control of HVAC systems.

Special-purpose plants

Custom automation solutions for special requirements and prototypes.

Standards & guidelines

Our software development follows established industry standards.

IEC 61131-3 (PLC programming languages)
IEC 61508 / IEC 61511 (for safety-related PLC programs)
VDI/VDE 3696 (FDI)
PackML (Packaging Machine Language)
GAMP 5 (Good Automated Manufacturing Practice)

Frequently asked questions

Answers to your questions about PLC programming.

Free PLC tool

Practical helper for your daily engineering work — browser-based, no signup required.

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Signal scaling calculator

Convert analog measurement signals (4-20 mA, 0-10 V) to physical process values. Essential for PLC commissioning and analog signal processing in TIA Portal, PCS7 and Rockwell.

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