JohnStudio

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  2. Posted

    Hi, First as i know we can communication in MODBUS RTU as summary below

    1.FX series, FX3U-485ADP-MB + ADPRW instruction 

    2.Q series, QJ71C24 <Serial interface module>+ Pre-defined protocol 

    3.Q series, QJ71MB91<Modbus interface module

    Three thing upper, i think it will ok

     

    The question is  1> FX series, Cloud we use < Serial communication only not Modbus adapter> + RS instruction to do Modbus and How to do that.

                                 2>Can I write modbus rtu over RS-232 interface of the CPU module Q01UCPU and how

  3. Posted · Edited by JohnStudio

    @Zahi YounisHi Zahi 

    I am the one who what to connect third party device using modbus rtu communication 

    I know the way to use ADRPW instruction + Modbus Adapter < FX3U-485ADP-MB module  >

    But i know RS instruction + Serial communication <non protocol > can do modbus via using write ladder same as data modbus data frame

    If someone have an experience , please show me your ladder 

    thank very much