Siemens HydroRanger 200 HMI, Руководство по эксплуатации

Страница: 340 / 404

Communications
C.31 Format words
HydroRanger 200 HMI
338
Operating Instructions, 06/2018, A5E36281317-AC
C.31.3 Format registers
Each format register is made up of three decimal fields:
● Decimal offset
● Secondary index
● Primary index
The primary and secondary indexes correspond to those that are used by the parameter.
The decimal offset indicates how the remote system must interpret the integer value that
is stored in the parameter access register. The following table shows how different
parameter values can be shown based on a register value (integer) of 1234.
Decimal Offset Example
0 0 1,234
1 -1 12,340
2 -2 123,400
3 -3 1,234,000
4 -4 12,340,000
5 -5 123,400,000
6 +1 123.4
7 +2 12.34
8 +3 1.234
9 Percent 12.34 %
Examples of using the format word for both the index values and the decimal offset value
are shown below:
Format Primary index Secondary index Decimal
00000 00 00 0
01003 01 00 3 right
02038 02 03 3 left
05159 05 15 Percent
To write these values you can use a decimal offset as follows: format word = (primary
index x 1 000) + (secondary index x 10) + (decimal).