Have a specific LK3U application in mind? Let me know in the comments.

Looking for clear, practical documentation on the LK3U PLC ?

Let me know if you need help with any specific LK3U instruction (PLSY, DRVI, etc.). Happy to help debug. Announcing the LK3U PLC Manual

I’ve been working with the (a popular FX3U-compatible clone) and wanted to share the manual for anyone who needs it.

We’ve just released the updated , covering: ✅ Hardware wiring & installation ✅ Programming basics (ladder logic & instruction list) ✅ Built-in high-speed I/O & positioning control ✅ MODBUS communication setup ✅ Troubleshooting & error codes