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  1. Sharath

    Facing error while doing modbus communication

    Hi, Thank you very much for the replay. you are right, Am trying to communicate HMI through USB to RS-232 convertor. Am sure HMI will support the Modbus RTU Protocol and it's configured as Slave only. with the help of Dip switches i've configured for RS-232. All the communication settings are...
  2. Sharath

    Facing error while doing modbus communication

    Hi, am trying to establish a Modbus communication. here am using SEALEVEL 7205ec card which is installed in my HMI. I tried with LOOPBACK adaptor its working fine. when I tried with modscan 32 its throwing up error as Recieved invalid response to MODBUS query **. am not able to find the solution...
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