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Rockwell CompactLogix 5390: 43% smaller PLC supporting up to 128 motion axes
On October 29, 2026, Control.com reported that Rockwell Automation introduced the CompactLogix 5390, a PLC aimed at machine builders and system integrators. According to the manufacturer's specifications cited in the report, its footprint is 43% smaller than the CompactLogix 5380 while expanding motion-control and connectivity capabilities.
Key specifications
Depending on the selected controller model, the 5390 family supports:
- Up to 128 motion axes.
- Up to 32 local PointMax I/O modules.
- Up to 300 EtherNet/IP nodes and 4,000 OPC UA nodes.
- Integrated safety features, CIP Security, Syslog and capabilities described as aligned with IEC 62443-4-2.
These are upper-end configuration limits, not specifications guaranteed for every model. Control.com notes that entry-level configurations support around eight motion axes, 60 EtherNet/IP nodes and 300 OPC UA nodes.
What makes this relevant?
An industrial controller increasingly needs to coordinate drives, distributed I/O, HMIs and plant-level data platforms, not merely run ladder logic. OPC UA support can help with interoperability across IIoT, SCADA and manufacturing information systems.
The controller is designed to work with Rockwell's Kinetix, PowerFlex, Stratix and FactoryTalk Design Studio ecosystem, making it potentially attractive to sites already using Logix-based automation.
Relevance for Vietnamese manufacturers
A basic machine with modest I/O requirements may not justify such a controller. However, multi-axis machines and connected production lines may benefit from reviewing its capabilities.
Engineers should verify the exact CPU model, supported axes and nodes, licenses, software compatibility, scan-time requirements and total system costs before choosing a configuration.
Original source
Edited and summarized by Kỹ Sư Thập Cẩm from the cited report. Cover photograph: CompactLogix 5390 product image from Rockwell Automation, linked to the manufacturer's image host. Image rights remain with Rockwell Automation.