MODBUS TD-500: Difference between revisions
→Request and response structure
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= '''Request and response structure''' = | = '''Request and response structure''' = | ||
''' | '''REQUEST''' : | ||
* (u8) | * (u8) Network address | ||
* (u8) 0х03 --> | * (u8) 0х03 --> Read command | ||
* (u8) | * (u8) Low byte of read reg. (value is ignored) | ||
* (u8) | * (u8) High byte of read reg. (value is ignored) | ||
* (u8) | * (u8) Low byte of the quantity -|-|-|-| | ||
* (u8) | * (u8) High byte of quantity -|-|-|-| | ||
* (u8) CRC16 - | * (u8) CRC16 - low byte | ||
* (u8) CRC16 - | * (u8) CRC16 - high byte | ||
''' | '''RESPONSE''': | ||
* (u8) Сетевой номер | * (u8) Сетевой номер | ||