Hello everyone,

Allow me to briefly introduce myself. I am a PLC Engineer from Hungary with roughly 18 years of experience working with Mitsubishi controllers in the automotive sector (formerly at AGC Glass, currently at Bridgestone).

Over the past months, as a personal engineering project, I have been developing a native Android HMI application that communicates directly with Mitsubishi PLCs via the SLMP (MC Protocol). The goal was to create a tool that requires no intermediate PC, OPC server, or cloud subscription.

One of the main technical challenges I tackled is a "Smart Dual Connection" logic. The app attempts to seamlessly switch between local factory Wi-Fi and remote WAN/DDNS depending on the active network capabilities, reading data like the M0 bit or CPU type to verify the connection state.

While it runs flawlessly on my own FX5UC setup, I am well aware that the SLMP implementation can behave differently across the Mitsubishi hardware spectrum (e.g., QnUDVCPU built-in ports vs. dedicated QJ71E71-100 modules).

My request to the community: I am currently running a closed engineering beta on Google Play and I am looking for a few experienced colleagues who have access to different Mitsubishi setups (home test-benches or safe environments). I would greatly appreciate it if you could test the SLMP connection stability with your specific hardware and provide some technical feedback.

If you are interested in taking a look under the hood and helping me validate the connection logic across different CPU series, please reply here or send me a PM. I will gladly grant you access to the closed beta testing group.

Thank you for your time, and I look forward to your technical insights!

Best regards,