Elster EK280, Applications Manual, Page: 125 / 163

EK280 Application Manual 123
8.1.2
Formats
Meanings of formats used:
Format Description Format Description
3 Ushort, 16 Bit 16 Array6, BCD, 12 Bit
4 Ulong, 32 Bit 17 Array8, BCD, 16 Bit
9 Counter6 32 IEEEfloat, 32 Bit
12 Array2, BCD, 4 Bit
Code Format Number of registers
a) binary formats:
3 Number 1 Value
4 Number 2
MS Word LS Word
upper part lower part
32 Exponential 2
MS Word LS Word
Bit 31
Bit 30…23 Bit 22…16
Bit 15...0
Sign Exponent
Mantissa
upper part
Mantissa
lower part
9 Counter 3
MS Word ... LS Word
Pre-decimal
position upper
part
Pre-decimal
position lower
part
Fractional digits
b) decimal formats:
17
BCD
Counter *
4
MS Word ... ... LS Word
Pre-decimal position Fractional digits
BCD time
stamp *
4
MS Word ... ... LS Word
CCYY ** MMDD ** hhmm ** ss00 **
16 BCD number 3
MS Word ... LS Word
12 digits
12 BCD time 1 hhmm **
* Counter or time stamp, depending on assigned LIS
-
200 Address (see below)
** CC = century, YY = year, MM = month, DD = day, hh = hour, mm = minute, ss = second
8.1.3
Value readout via Modbus
For reading values the Modbus functions "Read Holding Registers” (3) and "Read Input Registers” (4) are
implemented.
Readout of values is described in document [6] Modbus Communication with EK2x0_V2.0_*.pdf.
8.1.4
Value update via Modbus
For changing values the Modbus functions "Write Single Register” (6), and "Write Multiple Registers” (16) are
implemented.
Update of values is described in document [6] Modbus Communication with EK2x0_V2.0_*.pdf.