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Writing 32-Bit Modbus Registers with Modbus Poll for ABB VFDs

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This technical note provides guidance on writing 32-bit Modbus registers using the Modbus Poll software tool to communicate with ABB variable frequency drives (ACS380, 580, and 880 series). It explains the Modbus register address formula, high/low word structure, and includes a practical example for setting motor nominal current parameters.

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