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Engineering Services

PLC, HMI & SCADA Software Engineering

Readable, testable and maintainable automation software

We develop control functions together with operator experience, maintenance diagnostics, data integrity and commissioning needs.

SpecialistTechnical application scope
ControlledProject and change management
FAT / SATTraceable verification
PLC, HMI & SCADA Software Engineering
Engineering Approach

Automation software should make process behaviour safe and understandable

Scope, interfaces and acceptance criteria are defined before implementation.

PLC, HMI and SCADA software must do more than operate a machine. It should help operators understand status, enable maintenance teams to diagnose faults and record reliable production information. Program structure, naming, alarm philosophy, user permissions and backup principles are therefore defined early.

New systems can include functional design and modular software development. Installed systems may require source-code review, backups, fault correction, screen improvement, recipe and reporting functions, protocol conversion or migration to a current platform.

Capabilities

Technical Scope and Capabilities

Each work package can be selected separately or combined into a complete project.

PLC Programming

Sequences, interlocks, PID control, state machines, fault handling and manual/automatic modes are developed in modular structures.

HMI Interface Design

Operator flow, status visibility, alarm priority, recipes and maintenance screens use a consistent interface language.

SCADA and Monitoring

Multi-station supervision, alarms, trends, reports, user roles and data archives are configured to requirements.

Industrial Communication

Data exchange is engineered for Profinet, EtherNet/IP, Modbus TCP/RTU, OPC UA and device protocols.

Recipes and Data Logging

Product parameters, counters, quality values, events and export scenarios are structured for traceability.

Backup and Version Control

Source code, parameters, project versions, change descriptions and rollback points are controlled.

Applications

Applications, Deliverables and Engineering Criteria

A transparent scope supports technical quality, schedule control and maintainability.

Software functions

  • Machine sequence, mode management and interlocks
  • PID control for temperature, pressure, level and flow
  • Alarm classification, history and operator guidance
  • Recipes, format changes and user authorization
  • Trend, event, production and quality data logging
  • Data preparation for MES, ERP, databases or cloud interfaces

Software quality approach

  • Consistent naming and modular program architecture
  • I/O simulation and offline functional testing
  • Role-based access and confirmation of critical commands
  • Communication-loss and device-fault scenarios
  • Traceability of source code, licences, backups and versions
  • Clear diagnostic screens for operators and maintenance teams
Method

Project Delivery Method

The exact workflow is adapted to the installed system, production risk and agreed responsibility boundary.

  1. 01

    Requirements and Inputs

    Process, performance targets, available documents, site conditions and responsibility boundaries are clarified.

  2. 02

    Engineering and Planning

    Functions, architecture, products, test methods, deliverables, risks and implementation timing are prepared.

  3. 03

    Implementation and Internal Test

    Design, software or manufacturing work is executed with controlled versions and checklists.

  4. 04

    Site Verification

    Connections, devices, communication, functions, safety chains and process scenarios are tested.

  5. 05

    Handover and Lifecycle

    Current documents, backups, test records and follow-up recommendations are delivered and support scope is defined.

FAQ

Frequently Asked Questions

Practical answers about project preparation, compatibility, testing and delivery.

Can an existing PLC program be reviewed?

When source code, engineering software and access rights are available, program structure, faults, communication and improvement needs can be examined.

Are source code and backups delivered?

The delivery method for developed source code, device backups and parameter files is defined at project start within contractual and licensing conditions.

Can HMI screens follow our visual standard?

Yes. Colours, symbols, alarm priorities, navigation, languages and user roles can follow a customer standard or a project-specific interface guide.

Can SCADA data be transferred to other systems?

Depending on supported protocols and access, data exchange can be designed through OPC UA, SQL, APIs or file-based methods.

Can an old PLC program be migrated to a new family?

Hardware, instruction compatibility, network structure and site risk determine whether conversion, controlled rewrite or staged migration is appropriate.

Discuss this engineering requirement with our technical team

Share available drawings, product references, photographs, fault records and target performance.

A suitable scope, required preliminary checks and the information needed for a technical quotation can then be defined.

Request a Technical Quotation
TECHNICAL REQUEST

A model code or a complete project: start from what you know.

Share the product code, application, fault record or project scope. Our technical team will review the requirement and define the next step.

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