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QModbus Mater Period Scan the Slaver

  • Good afternoon everyone. have anyone used QT Modbus class. I used QModbus class bulit a Master . But when i period scan the slaver's HoldingResigster. it will reback me the timeout after few milliutes. I can make sure that the slaver is ok. What's wrong with the Master, who can help me. In addition, The master was progaramed allowing QT demo

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