Lk3u Plc Manual [ 2026 ]

(Refer to Figure 2-3 in the official LK3U PLC manual) Always verify the revision number on your PLC’s side label. Early LK3U batches had reversed RS422 pins for programming port (8-pin mini-DIN).

The LK3U is typically classified as a micro-PLC. It is widely recognized as a "compatible" or derivative series of the industry-standard Mitsubishi FX3U platform. This is a crucial detail for users: while the hardware form factor and instruction set closely mimic the Mitsubishi FX3U, the LK3U is manufactured by third-party automation firms (often marketed under brands like Kinkong or generic industrial labels). lk3u plc manual