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    How do I setup serial commnication between a Twido and a Magelis HMISTU655 using TwidoSuite v2.2?

    Goals and Symptoms
    This resolution provides a solution for setting serial communication between a Magelis HMISTU655 and a Twido. The RS485 port 1 and port 2 will be used on the Twido to communicate to a HMISTU655 HMI.
    Causes and Fixes

    Hardware:
    TWDLCDA24DRF : Twido Compact PLC
    TWDNAC485D: RS 485 connection module for Compact base
    HMISTU655: Magelis HMI 3.5"

    XBTZ9780 cable: Serial communication cable:
    (or XBTZ978 + XBTZN999 adapter)

    Software:
    TwidoSuite v2.2
    Vijeo Designer v5.1
     
    1) Setup the Twido Port 1 with the following parameters:
    Type: Modbus
    Address: 1
    Baudrate: 19200
    Data Bits: 8 (RTU)
    Parity: None
    Stop Bits: 1
    Response Timeout: 10
    Inter-frame delay: 10



    Note: Parity must be set to None on Port 1.
     
    2) Configure the TWDNAC485 optional port.


     
    3) Setup the Twido Port 2 TWDNAC485 with the following parameters:
    Type: Modbus
    Address: 1
    Baudrate: 19200
    Data Bits: 8 (RTU)
    Parity: None
    Stop Bits: 1
    Response Timeout: 10
    Inter-frame delay: 10



    Note: Parity can be set to None or Even on Port 2 using the TWDNAC485D.
     

    4) Create the following Ladder section.




    This initialize the memory words so that the TWIDO can communication to the HMISTU655. In a real application this may not be required.
     
    5) In Vijeo Designer, configure the Modbus RTU serial driver with the following parameters:

    Serial Interface: RS485
    Transmission Speed: 19200
    Retry Count: 2
    Parity Bit: None
    Stop Bit: 1
    Rcv. Time Out: 1 (Sec)
    TX Wait Time: 10 (Msec)

     
    6) In Vijeo Designer, configure the Modbus EQUIPMENT with the following parameters:

    Slave EQUIPMENT Address: 1
    Preferred Frame Length: Custom, 120 bytes
    IEC61131: 0-based
    Word Order: High Word First
    ASCII Display: Low byte first

     
    7) Create a Integer variable link to %MW10 in Vijeo Designer

     
    8) Add a Numeric Display field and configure as shown below:

    Attachments
    (Removed File URL: 202705_F0B2/HMISTU655.zip)(Removed Image URL: /PubResEXPORT.nsf/2b87ee90be777fc085257c28006ee4ef/7bb4434bde507c20c125774b00109b11/fl_block_5/0.544?OpenElement&FieldElemFormat=gif)(Removed File URL: 202705_F0B2/TWIDO_Magelis.zip)(Removed Image URL: /PubResEXPORT.nsf/2b87ee90be777fc085257c28006ee4ef/7bb4434bde507c20c125774b00109b11/fl_block_5/0.1126?OpenElement&FieldElemFormat=gif)

    Legacy KB System (APS) Data: RESL202705 V1.0, Originally authored by MiMe on 06/23/2010, Last Edited by MiMe on 06/23/2010
    Related ranges: Twido

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