Automated bottling line controlled by industrial PLC systems

PLC Version Control

PLC Version Control

Understand what changed between PLC projects and what it means for the machine.

Understand what changed between PLC projects and what it means for the machine.

Linexa traces each material difference through the machine’s logic, hardware, signals, and dependencies. Your team decides what stays. Linexa applies those decisions and returns one PLC project ready for the next change.

Linexa traces each material difference through the machine’s logic, hardware, signals, and dependencies. Your team decides what stays. Linexa applies those decisions and returns one PLC project ready for the next change.

Customer-specific machine variants

Renamed or reorganized PLC objects

Multi-vendor PLC project support

CURRENT WORKFLOW

Seeing the differences is easy. Understanding them is the hard part.

Native comparison tools can surface every changed block, tag, parameter, or hardware object. On a large project, that quickly becomes overwhelming. The engineer still has to reconstruct the context, understand what each difference means, and decide what should carry forward into the working project.

Start with the native comparison.

Native tools show what was added, removed, or modified. On a large project, that can mean hundreds of differences with little indication of which ones actually matter.

Trace the differences through the logic.

To understand a change, engineers follow it through blocks, tags, calls, interlocks, hardware, and communications to see what it affects on the machine.

Search for the missing history.

Then comes the question of why the change exists. Engineers dig through old project files, comments, change notes, and colleagues’ memory to reconstruct the intent behind it.

Covered vendors

  • Bosch Rexroth

HOW IT WORKS WITH LINEXA

Turn two PLC projects into one approved version, then update the coding standard.

Linexa interface comparing base and target PLC project versions
Linexa interface comparing base and target PLC project versions

See what each difference changes on the machine.

Linexa connects changed code, hardware, signals, and configuration to the machine functions they affect. Engineers can see which differences matter before deciding what to keep.

Build one approved PLC project from both versions.

Keep the valid changes from either project, remove unwanted ones, and resolve conflicts. Linexa applies those decisions and produces one project the team can work from.

PLC project comparison showing changed control logic and configuration data
PLC project comparison showing changed control logic and configuration data
PLC performance dashboard showing OEE readiness improvements
PLC performance dashboard showing OEE readiness improvements

Bring the project back to standard, then improve the standard.

Linexa checks the resulting project against your coding rules and makes deviations visible. Approved improvements can then be added to the reference project, libraries, or coding standard so they are applied to future machines.

In Practice

The machine is running one PLC project. Central engineering has another.

Commissioning fixes, service work, and local improvements have changed the project on the machine while the central standard evolved separately. Both versions contain changes worth keeping. Linexa explains the material differences, helps engineering decide what stays, and brings them back into one trusted PLC project.

>

>

>

30
30
30

%

%

%

less engineering preparation time

40
40
40

%

%

%

of material differences resolved

1
1
1

trusted PLC project to work from

Compare the PLC projects
behind your next change.

Compare the PLC projects behind your next change.

Bring the PLC project you plan to change and the standard, template, or approved version you want to compare it with. Linexa explains the material differences, shows what they change on the machine, and turns your decisions into one working project.

Christian Schlögel, former CTO and CDO at Körber and KUKA

“95% of European manufacturing runs on brownfield systems that are complex to understand and change. As production environments evolve faster, the ability to read, adapt, and connect PLC code becomes critical. Linexa is the first platform I've seen that decodes this complexity at scale. Engineers spend months on what Linexa delivers in days.”

“95% of European manufacturing runs on brownfield systems that are complex to understand and change. As production environments evolve faster, the ability to read, adapt, and connect PLC code becomes critical. Linexa is the first platform I've seen that decodes this complexity at scale. Engineers spend months on what Linexa delivers in days.”

“95% of European manufacturing runs on brownfield systems that are complex to understand and change. As production environments evolve faster, the ability to read, adapt, and connect PLC code becomes critical. Linexa is the first platform I've seen that decodes this complexity at scale. Engineers spend months on what Linexa delivers in days.”

“95% of European manufacturing runs on brownfield systems that are complex to understand and change. As production environments evolve faster, the ability to read, adapt, and connect PLC code becomes critical. Linexa is the first platform I've seen that decodes this complexity at scale. Engineers spend months on what Linexa delivers in days.”

Christian Schlögel

Christian Schlögel

Former CTO & CDO at Körber & KUKA

Former CTO & CDO at Körber & KUKA

Frequently asked questions

What does Linexa add to a native PLC project comparison in TIA Portal or Studio 5000?

Can Linexa align blocks or objects that were renamed or reorganized?

Can Linexa compare a delivered customer project with our machine standard or template?

How does version history help with the comparison?

Which PLC vendors, project types, and versions are supported, and what should we bring?

Does Linexa return an updated PLC project or only recommend what to change?

Can improvements found in a customer project be added to our machine or PLC coding standard?

Can Linexa compare TIA Portal, Studio 5000, CODESYS, and TwinCAT projects?

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Start with two PLC projects.

Share the two project versions you need to understand. Linexa compares them, explains the material differences, and turns your decisions into one PLC project ready for the next change.