Writing Parameters; Format Register - Siemens HydroRanger 200 Instruction 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 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 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.
7ML19985FC03
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 – INSTRUCTION MANUAL
10 09 08 07 06
1 0 0 0 0
05 04 03 02 01
0 0 0 0 0
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