Rockwell Automation in Central Queensland
Rockwell Automation ControlLogix and CompactLogix are the dominant PLC platforms across Bowen Basin coal mining operations - and appear widely across sugar mills, manufacturing, and ports and materials handling throughout Central Queensland.
The installed base runs across a wide range of ages. Modern installations use ControlLogix 5580 and CompactLogix 5380 with Studio 5000 and EtherNet/IP. Older systems run ControlLogix 5555 and 5563 hardware, and many sites still have PLC-5 and SLC 500 systems in service that have been running for decades.
Understanding these systems - the differences between processor generations, the migration paths between platforms, the way ControlLogix handles tasks and programs compared to the older platforms - comes from working on them regularly across real CQ industrial applications.
What Rockwell work looks like in practice
Most Rockwell work falls into a few categories: fault finding on existing systems, shutdown work for modifications and upgrades, PLC-5 and SLC 500 migration projects, and new equipment integration on existing ControlLogix infrastructure.
Fault finding on ControlLogix and CompactLogix requires understanding the program logic in context - not just reading rungs, but understanding what the sequence is supposed to do, what the plant is telling you, and where in the logic the fault originates. This is faster when the engineer has seen the same application type before.
Shutdown work requires preparation. Hardware pre-configured and tested in the workshop, programs written and simulated off-site, I/O mapped and verified before the outage window opens. The shutdown is for installation, commissioning, and cutover - not for writing code.
PLC-5 and SLC 500 upgrades
PLC-5 and SLC 500 systems are reaching end of life in terms of parts availability and vendor support. Many CQ sites are planning or actively executing migrations to ControlLogix and CompactLogix. These projects require careful program translation, I/O documentation, and commissioning - the original program logic is often not well-documented, and understanding what it does is part of the project.