Writing Parameters - Siemens HydroRanger 200 HMI Operating Instructions Manual

Writing parameters

To set parameters through Modbus, do the following steps:
1. Send the parameter, its primary index, and its secondary index (usually 0) to
registers 40,090, 40,091, and 40,092.
2. Write the value to registers 40,096 and 40,097.
3. Write the desired format word to register 40,093 to enable the HydroRanger 200 HMI
to interpret the value correctly.
Format register
Bits Values
1-8 0-2
9-11 0-7
12 0/1
13 0/1
14 0/1
15 0/1
16
For example, to format the level reading so that it is shown in percent with two decimal
places shifted left, the format bits would look like this:
Bit
16
numbers
Bit values 0
The value sent to the HydroRanger 200 HMI is 0001001000000000 binary or 512 decimal.
The value 512 is sent as an integer to register 40,093 to format the output words 40,094
and 40,095 accordingly.
If the numeric data type is set for integer and the value contains decimal places, they are
ignored. In this situation, use the decimal offset to ensure that you have an integer value
and then write your code to recognize and handle the decimal offset.
A5E36281317
Description
Error Code
3-bit number representing decimal offset
Direction of offset (0 = right, 1 = left)
Numeric format: Fixed (0) or Float (1)
Read or Write of data, Read (0), Write (1)
Word order: Most Significant Word first (0), Least Significant
Word first (1)
Reserved
15 14 13 12 11
0 0 0 0 0
HydroRanger 200 HMI – OPERATING INSTRUCTIONS
10 09 08 07 06
1 0 0 0 0
05 04 03 02 01
0 0 0 0 0
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