What does a PLC programming service include?

A PLC programming service includes software design, development, testing, commissioning, documentation, and ongoing support for industrial automation and machine control systems.

Do you support legacy PLC systems?

Yes. We specialise in upgrading and replacing legacy PLC systems, improving reliability while maintaining existing machine functionality wherever possible.

Which PLC platforms do you work with?

We primarily work with Siemens, Allen Bradley, and Mitsubishi PLC platforms, while also supporting other legacy and specialist systems as part of migration projects.

How does structured PLC programming reduce downtime?

Structured PLC programming improves readability, fault diagnostics, and consistency, allowing issues to be identified and resolved faster with less risk during maintenance or upgrades.

Can PLC upgrades be completed without stopping production?

In many cases, yes. Phased upgrades, parallel testing, and planned changeovers can significantly reduce or avoid production downtime.

Do you provide on-site commissioning and support?

Yes. We support PLC systems through factory testing, site commissioning, optimisation, and into live operation.

PLC Programming & Machine Control

Robust PLC Solutions for New Systems, Upgrades & Retrofits

Stratos Control Systems delivers structured, maintainable PLC programming and machine control solutions for industrial automation environments. We focus on clarity, consistency, and long-term support, ensuring PLC software is easy to understand, fault find, and modify throughout the system lifecycle.

Our engineers support both new automation systems and legacy PLC upgrades and replacements, delivering solutions that minimise disruption to production while improving reliability and performance.

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PLC Programming Built for Long-Term Support

PLC software is often the single biggest factor in whether an automation system is reliable or a constant source of problems. Poorly written or undocumented PLC code increases downtime, slows fault finding, and makes future upgrades risky and expensive.

Stratos Control Systems designs PLC software that is:

Clearly structured
Consistently written
Properly documented
Aligned with industry best practice

We don’t deliver quick fixes, we deliver PLC systems engineers can support with confidence.

Common PLC & Machine Control Challenges We Solve

We are frequently engaged to resolve issues caused by poorly designed or ageing PLC systems, including:

Poorly structured or undocumented PLC code
Obsolete or unsupported PLC hardware
Difficult integration between machines and systems
Software that is hard to fault find or modify
Inconsistent standards across machines or sites

Our approach removes these risks by applying clean software architecture, clear standards, and proven platforms.

Our PLC Programming & Machine Control Services

PLC Programming & Software Development

PLC Programming and Software Development.png

We deliver PLC software for industrial automation and machine control projects, focusing on readability, consistency, and long-term support.

Our PLC programming services include:

New PLC software development
Structured programming standards
Clear comments and documentation
Supportable software architecture

PLC Upgrades & Migration

When PLC hardware or software becomes obsolete, we deliver planned upgrade and migration strategies that reduce risk and downtime.

Services include:

PLC upgrade planning and execution
Migration from legacy PLC platforms
Parallel testing and phased changeover
Minimal disruption to production

Machine Control Systems

We deliver machine control solutions for OEM and site-based equipment, integrating PLCs with drives, motion, safety, and HMI systems.

Machine control system design
PLC-based machine automation
Integration with existing systems
Reliable, repeatable machine operation

Legacy PLC Replacement

Unsupported PLCs increase operational risk. We replace legacy PLC systems with modern platforms while maintaining existing machine functionality where possible.

Legacy PLC assessment
Replacement using modern platforms
Software redevelopment and testing
Clear handover and documentation

Commissioning & On-Site Support

We support PLC systems through commissioning and into operation, ensuring systems perform as expected in real-world environments.

Factory and site commissioning
Fault finding and optimisation
Operator and maintenance support

Supported PLC Platforms

Stratos Control Systems primarily delivers PLC solutions using industry-leading platforms:

Siemens
Allen Bradley
Mitsubishi

We also support a wide range of legacy and specialist PLC systems, particularly as part of upgrade and migration projects.

Industries We Support

Our PLC programming and machine control services support a wide range of industrial sectors, including:

Manufacturing
Food & Beverage
Packaging
Pharmaceuticals
Material Handling
Heavy Engineering

Each PLC system is designed to meet the operational, regulatory, and performance requirements of the industry it serves.

Why Choose Stratos Control Systems for PLC Programming

Experienced industrial automation engineers
Structured, standards-based PLC programming
Strong focus on fault finding, diagnostics, and maintainability
Proven experience with new systems and legacy upgrades
Expertise across Siemens, Allen Bradley, and Mitsubishi platforms
We deliver PLC systems that work reliably today and remain supportable tomorrow.

The Result

Reliable machine control. Cleaner PLC code. Faster fault finding.

Automation systems engineers can understand, maintain, and trust.

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Talk to Us About Your PLC System

Whether you need new PLC software, an upgrade to legacy systems, or improved machine control reliability, Stratos Control Systems can help.