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Virtual commissioning for machine builders

Virtual commissioning: Find logic and sequence errors before FAT.

PLC-connected testing before physical commissioning.

We combine commissioning experience, automation knowledge, and digital models so your team can validate sequences, faults, HMI, and product flow while changes are still manageable.

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Built on commissioning experience

We know where machine projects become expensive.

Virtual testing creates value because we understand PLC logic, machine behavior, FAT, startup, and the practical handover to operators and service teams.

01

PLC, sequence, and interface clarification

02

End-of-Line flow, variants, and fault scenarios

03

FAT, startup, and customer acceptance

04

Training, service, and reuse after delivery

Test the real machine logic in a digital environment.

Many integration problems are discovered only when mechanics, software, and product flow meet on the factory floor. We build a digital test environment from your CAD, signals, and machine behavior so those dependencies become visible earlier.

Your actual PLC logic is connected to the model. The team can test sequences, stops, faults, changeovers, and HMI interaction before physical startup, with a shared record of what passed and what still needs attention.

Traditional Commissioning

  • Testing on physical equipment
  • Debugging during startup
  • Risk of equipment damage
  • Operator training after delivery
Our approach

Virtual Commissioning

  • Testing on digital model
  • Debugging in the design phase
  • No physical equipment at risk during virtual tests
  • Operator training before the machine exists

The Path to Your Digital Twin

We build on data you already have

01

Data Import

A clarified model package based on CAD, diagrams, signals, variants, and test goals.

02

Physics & Kinematics

A behavioral model with motion, sensors, product flow, and the constraints that matter for testing.

03

Logic Connection

A testable connection to the actual PLC and HMI logic, including mapped signals and machine states.

04

Stress Test

Named scenarios, acceptance criteria, issue evidence, and a clear handover toward FAT.

New to virtual commissioning?

These guides explain the concepts before you scope a project or book a dialogue.

How to build a digital commissioning test plan

Named scenarios, pass criteria, and issue tracking before the customer arrives for FAT.

Read guide

Unity digital twin for industrial machines

Why OEM teams use Unity for PLC-linked commissioning, motion, and operator context in one runtime.

Read guide

What is virtual commissioning?

Definition, how it works in practice, and when the investment makes sense.

Read guide
Free tool

Calculate the business impact before you invest

Use our ROI calculator to estimate hours saved, commissioning cost, and net savings across development, FAT, and SAT, based on your project assumptions. Share scenarios with your team or export a PDF report.

Open ROI calculator

Frequently Asked Questions

01Does it require a finished machine?

No. The value is greatest when we start in parallel with construction and can validate concepts before steel is ordered. A physical machine is not a prerequisite.

02Which PLCs do you support?

We scope each connection individually and have practical experience with platforms such as Siemens and Beckhoff. PLC brand, runtime, and interface affect the test setup, so we confirm your exact configuration before kickoff.

03What does virtual commissioning cost compared to physical rework?

Digital testing costs modeling time, but physical rework, site visits, and delayed FAT are often far more expensive. Use our ROI calculator to estimate net savings for your project.

04What is the difference between virtual FAT and physical FAT?

Virtual FAT tests logic, sequences, HMI, and fault scenarios digitally before the customer arrives. Physical FAT validates what requires real equipment: tolerances, wear, material, and sensor behavior. Read the virtual FAT vs physical FAT guide for a practical split.

05What cannot be tested virtually?

Physical wear, real material properties, production sensor tolerances, and some mechanical deviations still require physical validation. Virtual testing reduces risk early; it does not replace all physical FAT.

06What is the difference between Virtual Commissioning and a digital twin?

Virtual Commissioning is the process: testing logic, flow, and HMI digitally before startup. The digital twin is the test environment and model that makes it possible. The same model can often be reused for training and service after FAT.

07Do we need a written test plan for virtual commissioning?

Yes, if you want repeatable evidence instead of one-off demos. A digital commissioning test plan names scenarios, pass criteria, and open issues so automation, mechanics, and project management share the same checklist. Read our guide to building a test plan for a practical structure.

Cases from this area

See how the competencies connect in practice.

Remote Virtual FAT Evidence PortalRepresentative interface
Virtual Commissioning · Machine Builders

Remote Virtual FAT Evidence Portal

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Digital Commissioning Test PlanNeexo-designed visual
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Digital Commissioning Test Plan

Govern digital commissioning with a shared scenario catalogue, acceptance criteria, evidence requirements, and traceable issue handling

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Virtual CommissioningAI-generated context image
Virtual Commissioning · Machine Builders

Virtual Commissioning

Connect real PLC code to a physics-based virtual line to validate sequences, interlocks, material flow, and recovery before hardware startup

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Ready to minimize your risk?

Let's have a no-obligation conversation about how Virtual Commissioning and Digital Twins can strengthen your next project.

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Digital engineering for machine builders - test, explain, and use the machine before and after it hits the floor.

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  • neexo ApS
  • Andkærvej 19, 7100 Vejle
  • hello@neexo.dk
  • +45 31 65 54 60
  • CVR46273125

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