From the Shark 200 Modbus Register Map, the Primary Readings Block Format is Float (or reverse float for most software settings) but for some software that doesnt have the Float format, Integer reads can be used by using the formula,
Modbus = (1st Shark Modbus register x 65536) + (2nd Shark Modbus register + 65536)/65536
Remember that the resulting modbus is expressed in secondary values so to convert into Primary readings use CT ratio for current, PT ratio for voltage and CT and PT ratio for Power.