The Rex Mini32A is a compact programmable logic controller designed for edge computing, industrial sensing, and real time control in constrained environments.
Engineers and operations teams use its dense I/O and deterministic processing to monitor conditions, trigger responses, and log events close to the machine.
| Model | CPU Cores | Digital I/O | Analog I/O |
|---|---|---|---|
| Rex Mini32A Base | Dual Core ARM | 16 | 4 |
| Rex Mini32A Expansion | Dual Core ARM | 24 | 6 |
| Rex Mini32A Safety | Dual Core ARM | 20 | 4 |
Hardware Architecture And Physical I/O
Under the hood, the Rex Mini32A combines a dual core ARM processor with a layered I/O structure that keeps wiring tidy and signals reliable.
Digital inputs support 24 V tolerant sensing, while relay outputs handle resistive and inductive loads with clear isolation.
Analog channels accept 0 10 V and 4 20 mA signals, enabling direct connection to pressure, temperature, and flow sensors.
The enclosure follows panel mount standards, allowing secure installation in control cabinets or on distributed junction boxes.
Programming Environment And Protocol Support
Native Development Tools
Configuration and logic development happen through an integrated software suite that guides users from project setup to online monitoring.
Function block diagrams, structured text, and ladder logic editors let engineering teams choose the style that matches their expertise.
Industrial Networking Options
On the networking side, the Rex Mini32A supports Modbus TCP, EtherNet/IP, and MQTT for direct integration with supervisory control systems.
Built in safeguards prevent bus overload, ensuring that network traffic from many peers does not disrupt critical control tasks.
Deployment Scenarios And Integration
Facilities commonly place the Rex Mini32A at the machine level to manage local sequences without relying on distant servers.
Its deterministic scan cycle keeps motion control and safety logic predictable even when higher level applications experience load spikes.
Through the configuration suite, tags, alarms, and historical logs can be mapped upstream to cloud platforms or historian databases.
Operations And Long Term Use
- Verify power supply ratings and grounding before connecting field devices.
- Use the provided diagnostic tools to monitor CPU load and network traffic on an ongoing basis.
- Schedule offline testing of critical logic to confirm behavior after firmware or configuration updates.
- Keep exported project copies and firmware version records to simplify troubleshooting and upgrades.
FAQ
Reader questions
What environments is the Rex Mini32A rated for
The Rex Mini32A is rated for indoor factory use and protected installations, meeting enclosure standards that guard against dust and limited water exposure.
Can I add more I/O after installation
Yes, you can expand digital and analog points using certified modules that plug into the rear connectors without interrupting the core controller.
Does it include safety rated inputs
The safety variant of the Rex Mini32A includes monitored contact inputs and relay outputs that support SIL 2 applications when configured appropriately.
How do I update firmware and configuration backups
Firmware releases and project backups are applied through the engineering suite, with step by step prompts that validate version compatibility before writing.