• Key Tips on Dealing with 64-bit data on Modbus Communications Devices that only Support 32-bit data

    September 08, 2015, by Jimmy Coleman

    Most of the AKD drive’s parameters have a 32bit data size, but some parameters have a 64bit data size. Modbus communication on the AKD drive uses registers of a 16bit data size. So for a 64bit parameter, it takes four registers to send the data over Modbus. There are many devices, including PLC’s, HMI’s, and PC programs that do not handle a 64bit data size. So what can be done to read and write 64bit values when working with Modbus and a device that only supports 32bit values?

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