• Support Mitsubishi GX-Develoer\GX-WORK2
  • Support for human-machine interface connection, the application is completely equivalent to Mitsubishi FX3U
  • Support ladder programming, download, monitoring. 
  • The programming port used for program download and communication with the human machine 
  • This PLC adopts an industrial-grade 32-bit MCU with strong anti-interference, and its running speed far exceeds that of FX3U. 
  • This PLC transmission baud rate is 38400

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LE3U PLC Manual

Test Video and Plc Program Example


le3u-24mt wire
le3u-32mt wire
le3u-48mr wire

LE3U Cell

DB9 connector pinout

2 (Rxd), 3 (Txd), 5 (GND) pin


1. DC+ 24V power supply input positive pole
2. DC- 24V power supply input negative pole
3. Com Input common, low level
4.What is ” JO” CAL & CAH ?
CAN function is temporarily not supported
5.The working principle of RS485 communication is as follows:
Our le3u series PLC support MODBUS-RTU


LE3u-MCGS examplc

LE3U PLC Upload and Download

Do not connect with rs232c

Must be create new project, not load project from PLC

AD and DA I can do input and output how to read and write


23 thoughts to “LE3U PLC”

  1. Olá amigo PLC FX3U
    Eu utilizo GX developer para programar só que esta acontecendo o seguinte
    Não aparece para mim o transfer setup para que eu possa escolher a porta serial
    você pode por gentileza me ajudar

  2. I want to read analog input on the first LE3u from the second LE3U using RD3A k1 k0 D1, can I need to rs485 physical port or protocol, what is other method, and how to connect wires to can be using the second LE3U board as a extension module. Please guide for me, sent guiding document to dhauto.ltd@gmail.com. thanks so much.

  3. Power off . my fx3u-32mt device doesn’t remember the data. specifically from d200~d7999 will go to 0. is there any solution. battery ok

    1. From D0 to D511, the default is not maintained when power off, and D511 is locked after power off by default.

  4. for acceleration deceleration i tried setting m8144 M8145 for Y0 in all PLSY PLSV DRVI DRVA
    does not seem to reponse. please help.

  5. im stucked with using rs486. its not responding. can anyone help me tolve my prblem please.
    my whatsap is +9477***32548

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