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How to read 64 bit modbus registers on 32 Bit Software Packages?

You must read the register in 4 x 16 Bit Pieces

Then apply the following formula to the values you receive in these 4 registers

E.g. on the IEM3255 Meter 3204 3205 3206 & 3207 are used to read the Active Energy Total

A= 3204
B= 3205
C= 3206
D= 3207

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