Siemens HydroRanger 200 Instruction Manual download pdf (Page 116)

Page 102 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FCO1

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Data Types

For example, if R41,442 is read as a UINT32, the 32 bits would look like this:

The two registers are read as a 32-bit integer.

The most significant word (MSW) and least significant word (LSW) can be reversed to

accommodate some Modbus drivers. See

Word Order (R40,062)

on page 92 for details.

The position of the decimal place is dependent on the register. For more details see the

description of the register.

Split Values

Certain parameters are actually a pair of numbers separated by a colon, using this

format: xx:yy.

One example is P807, Transducer Noise, where:

xx = the average noise value in dB

yy = the peak noise in dB

The number which corresponds to xx:yy, either for reading or setting a parameter, is

determined by the following formula:

For storing to the Milltronics device:

value = (xx + 128) x 256 + (yy + 128)

For reading from the Milltronics device:

xx = (value / 256) – 128

yy = (value % 256) – 128

where % is the modulus operator.

The modulus can be computed by following these steps:

value

= value / 256

value

= remainder of value

value

= value

x 256

yy = value

– 128

It may simplify Parameter to notice:

xx = (most significant byte of value) – 128

yy = (least significant byte of value) – 128

R41,442 R41,443

16 MSW 1 16 LSW 1

32 32-bit integer value (UINT32) 1

1 2 ... 111 112 113 114 115 116 117 118 119 120 121 ... 255 256

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Siemens HydroRanger 200 Instruction Manual Page 116