Controls & CNC modernization
PLC, CNC, HMI, communications, and machine-control updates for equipment that has to keep earning its place on the floor.
Industrial controls engineering
Modernize the controls.
Keep the machine right.
Great Lakes Automation helps manufacturers and machine builders modernize PLC, CNC, and HMI systems without treating a successful compile as proof that the machine still works.
Production-minded modernizationBuilt around the actual machine and its operating path.
Controls to CNC integrationPLC, HMI, drives, motion, and machine interfaces.
Validation before handoffTraceable checks beyond source-code conversion.
Services
Controls work for projects that cannot afford a “looks good” handoff.
From legacy machines to current Siemens and Allen‑Bradley platforms, the goal is practical: make the system more supportable without losing the behavior production depends on.
Migration validation & remediation
Review converted or refactored logic for missing dependencies, bad interfaces, orphaned execution paths, state loss, and architectural gaps.
Commissioning & hard problems
Controls troubleshooting, startup support, retrofit recovery, and structured analysis when the documentation is thin and downtime is real.
Approach
The architecture is part of the function.
A block that compiles but is never called, has the wrong instance behavior, or no longer reaches the same I/O and alarm paths is not complete. Modernization has to be evaluated as a working execution chain.
That discipline is especially important when legacy logic is converted, reorganized into Software Units, or assisted by AI tools.
Establish the working baseline
Understand the legacy behavior, machine context, call structure, data dependencies, and operational risks before changing the architecture.
Map the execution path
Trace callers, dependencies, instances, timers, interfaces, interlocks, messages, and the scan behavior that connects them.
Implement in the correct target structure
Place logic where the production architecture expects it, rather than creating compile-only blocks or disconnected helpers.
Validate the closure
Confirm the new path is reachable, behaviorally intact, and ready for controlled commissioning and handoff.
Capabilities
Practical depth across machine controls.
Technical coverage is selected to solve industrial automation work in context—not merely to list platforms.
Core engineering work
- Legacy PLC program assessment, refactoring, and migration
- Siemens TIA Portal, optimized SCL, and Software Unit integration
- SINUMERIK controls and CNC / PLC coordination
- HMI, alarms, machine status, diagnostics, and recovery logic
- Industrial networks, field I/O, drives, motion, and machine interfaces
- Structured commissioning, field troubleshooting, and root-cause analysis
Platforms & environments
- Siemens TIA Portal
- STEP 7
- SINUMERIK ONE
- SINUMERIK 840D
- Allen‑Bradley
- Studio 5000
- FactoryTalk
- WinCC
- PROFINET
- PROFIBUS
- EtherNet/IP
- CNC & motion systems
Start the conversation
Bring the machine problem—not a polished scope.
Share the equipment, controls platform, production constraint, and where the project is stuck. The first conversation should make the next technical step clearer.