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CHAPTER 5: COMMUNICATIONS
EPM 6000 MULTI-FUNCTION POWER METERING SYSTEM – USER GUIDE 5–9
14. All 3 voltage angles are measured for Wye and Delta hookups. For 2.5 Element, Vac is
measured and Vab & Vbc are calculated. If a voltage phase is missing, the two
voltage angles in which it participates are set to zero. A and C phase current angles
are measured for all hookups. B phase current angle is measured for Wye and is zero
for other hookups. If a voltage phase is missing, its current angle is zero.
5.1.4 Modbus Memory Map Data Formats
The date format codes indicated in the Format column of the Modbus memory map are
described below:
ASCII: ASCII characters packed 2 per register in high, low order and without any termination
characters. For example, "Shark100" would be 4 registers containing 0x5378, 0x6172, 0x6B31,
0x3030.
SINT16 / UINT16: 16-bit signed / unsigned integer.
SINT32 / UINT32: 32-bit signed / unsigned integer spanning 2 registers. The lower-addressed register
is the high order half.
FLOAT: 32-bit IEEE floating point number spanning 2 registers. The lower-addressed register is the
high order half (i.e., contains the exponent).