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https://www.radioradar.net/en/news_of_electronic/erqos_eqsp32_ai_based_code_testing_hil.html

Erqos EQSP32 Controller Brings AI-Based Code Testing with Real Hardware-in-the-Loop

Erqos has introduced hardware-verified agentic programming for its EQSP32 Connected MicroPLC. The new capability adds native Hardware-in-the-Loop (HIL) functionality, allowing an AI agent to generate, execute and validate industrial control programs directly on the physical controller.

Key Features

• Real-silicon execution during automated verification
• Deterministic sensor-state and actuator-state injection
• Repeatable testing of safety interlocks
• Compressed testing for long-duration control sequences
• Persistent test artifacts for regression workflows
• Closed verification loop: AI generates → loads → tests → revises code on real hardware
• Works with a sub-$200 EQSP32 MicroPLC + USB + AI agent (no expensive test bench required)

The EQSP32 runs the actual control program on its own silicon while the AI agent injects simulated sensor conditions and observes the outputs through a serial connection. This creates an independent hardware check instead of relying solely on software simulation.

What It Enables

• Safe testing of pressure, temperature, level and switch inputs at precise values
• Observation of pumps, valves and alarms under controlled conditions
• Injection of fault scenarios (sensor failures, out-of-range values, threshold violations)
• Compressed evaluation of long operating sequences, delays and interlocks

In a documented reverse-osmosis water-treatment example, an AI agent generated the functional specification, control program, 31-case HIL test plan, test harness and final report in just 18 minutes of unattended operation — with all 31 tests passing on the real controller.

Target Applications

• AI-assisted industrial programming
• Machine control systems
• Water treatment and process automation
• Safety-critical control logic validation

Source:  Electronics For You