Siemens S7 PLC programming
Looking for a partner to program or upgrade your production line or machinery?
We specialize in Siemens S7 PLC programming — from classic models like S7-200/300/400 to the latest S7-1200 and S7-1500 series — ensuring your systems run efficiently and reliably.
What technologies and tools do we use for programming Siemens S7 PLC controllers?
Integrated TIA Portal environment
A complete engineering environment for Siemens automation systems, covering TIA Portal programming of S7-1200 and S7-1500 controllers, HMIs, drives and network configuration. It enables efficient development and diagnostics.
STEP 7 (Classic) programming environment
Used for programming earlier generations of Siemens controllers such as S7-200, S7-300 and S7-400. It provides full support for existing installations and their modernization.
PLCSIM Advanced simulation
Software for virtual simulation of S7-1500 and S7-1200 controllers. It allows PLC programs to be tested without physical hardware, speeding up commissioning and minimizing the risk of errors.
Profinet and Profibus communication protocols
We configure and integrate devices within Profinet (IRT, RT) and Profibus (DP, PA) industrial networks, ensuring fast and reliable data exchange between controllers and peripheral devices.
HMI/SCADA WinCC visualisation
We develop operator interfaces (HMI) and SCADA systems using WinCC TIA Portal and WinCC Flexible, enabling process monitoring, control and data archiving.
Integration of Sinamics drives in Startdrive
A specialized tool within TIA Portal for configuring, parameterizing, and diagnosing Siemens Sinamics drives. It ensures seamless motion control integration with the PLC program.
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Which languages do we use while programming Siemens S7?
In our industrial automation projects, we use proven and modern PLC programming technologies. We work with languages compliant with the IEC 61131-3 standard, allowing us to precisely tailor the coding approach to the nature, complexity and technical requirements of each process.
Ladder Diagram (LAD)
We use the ladder diagram language to create logical control systems in a graphical and easily readable way for maintenance engineers. Thanks to its clarity, LAD is ideal for projects where quick diagnostics and intuitive control logic are essential.
Function Block Diagram (FBD)
The function block diagram allows us to create modular programs based on functions and logic blocks. It simplifies analysis, code reuse and maintenance of large-scale automation projects.
Structured Text (ST / SCL)
We use the textual programming language for complex calculations, control algorithms, and data operations. Structured Text (known in the Siemens environment as SCL) provides great flexibility and performance in executing advanced technological processes.
Statement List (STL)
We use STL when working with low-level controller logic, where execution details and precise instruction control are crucial. It enables program optimization and full understanding of the sequence of operations executed within the PLC.
Sequential Function Chart (SFC)
We use the SFC language to design process sequences, providing a clear representation of operations and states. This facilitates production cycle management and real-time monitoring of process progress.
Instruction List (IL)
In modernization projects or when working with older controllers, we also support the IL language. Although less commonly used today, it still plays a role in maintaining systems based on earlier versions of Siemens STEP 7 software.
PLC programming – certification
BMW TMO
Daimler Integra
Daimler Powertrain
GSC
VASS
For which industries is Siemens S7 PLC programming essential?
Automotive industry
The automotive industry is synonymous with high-level automation. Production lines, welding, assembly, and logistics systems rely on precise control. PLC programming plays a key role in managing complex process sequences, integrating robotics and ensuring both worker safety and continuous production. From optimizing production cycles to introducing new car models, Siemens S7 enables flexible and reliable control, reducing downtime and increasing overall plant efficiency.
Machine manufacturers
Industrial machine manufacturers integrate Siemens S7 PLC controllers as the core of their products — from packaging machines and CNC tools to specialized assembly lines. S7 programming involves creating flexible and scalable software that allows quick adaptation of machines to the specific needs of end customers. This is the key to ensuring optimal performance, reliability, and ease of operation. Professional programming enhances a machine’s competitiveness on the market, providing both technological and operational advantages.
Food and beverage industry
High performance, consistency, and strict hygiene standards are key challenges faced by the food industry. Siemens S7 controllers manage processes such as mixing, filling, packaging and CIP (Clean-In-Place), ensuring precise recipe execution and compliance with sanitary standards. Using S7 controllers allows for optimized raw material usage, reduced production times, and quick adaptation to changing market demands — for example, through easy implementation of new products and packaging. This forms the foundation for efficient and safe food production.
Chemical and pharmaceutical industry
Precision, safety and regulatory compliance are top priorities in the chemical and pharmaceutical industries. The use of PLC controllers is essential for controlling complex batch and continuous processes, managing reactors, dosing systems and critical safety interlocks. This ensures not only precise control of process parameters such as temperature and pressure but also minimizes the risk of failures and environmental hazards. Siemens S7 also enables easy system validation, which is crucial for meeting GMP standards and other industry regulations.
Energy and heat generation sector
Stability and reliability are the foundation of energy system operations. Siemens S7 PLC programming is used to control turbines, generators, boilers, cooling systems and energy distribution. In the face of increasing demands for efficiency and renewable energy integration, S7 enables optimization of the entire system’s performance. It provides precise resource management, rapid response to load changes and a high level of safety — all of which are critical for supply continuity and reducing operating costs.
Water management and wastewater treatment
Water and wastewater management systems require continuous operation and monitoring. PLC programming plays a key role in automating pumping stations, water treatment facilities, filtration systems and biological purification processes. It enables remote management, energy optimization for pumps, precise chemical dosing and rapid response to failures. With Siemens S7, these systems operate more efficiently, meeting strict environmental standards and ensuring water safety for communities while minimizing operating costs.
Customers and locations where we did projects
Star Assembly SRL
Sebeș, Romania
Audi
Gyor, Hungary
BMW
Steyr, Austria
Stellantis
Mirafiori, Italy
BMW
Dingolfing, Germany
Daimler
Brühl, Germany
NIDEC
Niepołomice, Poland
Skoda
Mlada Boleslav, Czech Republic
Liebherr
Bischofshofen, Austria
Festo
Budapest, Hungary
Daimler
Untertürkheim, Germany
Dana
Amal, Sweden
Scania
Södertälje, Sweden
Volkswagen
Polkowice, Poland
Volkswagen
Salzgitter, Germany
Daimler
Redford, USA
Daimler
Kassel, Germany
Getrag
Köln, Germany
Getrag
Bordeaux, France
Daimler
Jawor, Poland
Bosch
Charleston, USA
Magna
Tychy, Poland
ZF
Toluca, Mexico
FAQ – Frequently asked questions
Which Siemens S7 controllers do you program?
We program both older controllers from the S7-200, S7-300, and S7-400 series as well as newer models such as the S7-1200 and S7-1500. This allows us to modernize existing systems or develop completely new control applications based on the latest Siemens technologies.
In which environment do you program Siemens S7 PLCs?
We mainly work in the integrated TIA Portal environment, which enables comprehensive configuration of PLCs, HMI panels, drives, and communication networks. For older installations, we also use STEP 7 (Classic) to ensure full compatibility with existing systems.
What are the typical costs for Siemens S7 PLC programming services?
The cost of our services is determined individually, depending on the project scope and level of complexity. After discussing your needs and technical requirements, we prepare a detailed quotation. We always aim for full transparency and budget optimization.
Can you assist with the modernization of older Siemens S7 systems?
Yes, we specialize in updating and migrating legacy Siemens systems to newer platforms, ensuring full process functionality and minimizing production downtime during the transition.
Do you provide communication system integration?
Yes, we design and configure industrial networks based on PROFINET and PROFIBUS, ensuring fast, secure, and reliable data exchange between controllers, peripheral devices and higher-level systems.
In which programming languages do you develop Siemens S7 applications?
We program Siemens S7 controllers using languages compliant with the IEC 61131-3 standard: Ladder Diagram (LAD), Function Block Diagram (FBD), Structured Control Language (SCL), Statement List (STL), Sequential Function Chart (SFC) and Instruction List (IL). The choice of language depends on the project’s nature — from simple logic operations to advanced sequential and process control algorithms.
Do you also provide HMI/SCADA visualization development?
Absolutely. We design and implement HMI operator panels and SCADA systems based on WinCC, enabling full real-time monitoring and control of industrial processes.
Do you offer support after project completion?
Yes, we provide comprehensive technical support after system implementation. Our team is available to answer your questions and resolve potential issues. We can also establish long-term maintenance agreements tailored to your needs.
How can I start working with you on Siemens S7 PLC programming?
Simply contact us to discuss your installation requirements. After an initial analysis, we will prepare a concept, schedule, and customized offer aligned with your specific process and operational goals.
Contact us – we’ll respond within 24 hours!
Do you have questions about Siemens S7 PLC programming? Fill out the contact form, and our team will get back to you within 24 hours – either by phone or email.
During the conversation or correspondence, we will define the scope of work and services you are interested in. Then, we will conduct an internal analysis of your inquiry to prepare the best possible solution.
Within a maximum of 5 business days, we will get back to you with information on the next steps.
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