4–4
EPM 4
5
00 SUB METER – INSTRUCTION MANUAL
MODBUS COMMUNICATIONS
CHAPTER 4: COMMUNICATIONS
• Power: kW, kvar, and kVA
• Power Factor
4.1.7
32-bit Long and Float Data Formats
The EPM4
5
00 supports standard format for 32-bit Long (signed or unsigned). The first of
the two 16-bit Modbus register set contains the HIGH order 16 bits of the 32-bit Long data.
The second of the two 16-bit Modbus register set contains the LOW order 16 bits of the 32-
bit Long data.
The EPM4
5
00 supports Intel 32 bit (IEEE) FLOAT format. That means, unlike the standard
Long format, the first of the two 16-bit Modbus register set contains the LOW order 16 bits
of the 32-bit Float data. The second of the two 16-bit Modbus register set contains the
HIGH order 16 bits of the 32-bit Float data.
