Siemens HydroRanger 200 Manual de Instruções descarregar pdf (Página 112)

Page 98 HydroRanger 200 – INSTRUCTION MANUAL 7ML19981FCO1

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Modbus Register Types

2. Read the value from the appropriate parameter register (the example uses 44,921).

Types of values are:

•

Numeric Values

on page 101

•

Bit Values

on page 101

•

Split Values

on page 102

•

Text Messages

on page 103

•

Relay Function Codes (P111 Only)

on page 104

A value of 22,222 indicates that an error occurred. Specify a different format type

and try again.

Writing Parameters

The method of writing parameters is similar to the method of reading them. Become

familiar with

Reading Parameters

, page 96, before attempting to write any parameters.

To write parameter values to the HydroRanger 200, follow these steps:

Global Index Method (P782 = 0)

1. Write the primary index value into R43,999.

2. Write the secondary index value into R43,998.

3. Write the desired format value into the appropriate format register.

4. Write the value to the appropriate parameter register.

Parameter Specific Index Method (P782 = 1)

1. Write the primary index, secondary index, and data format values into the

appropriate format register.

2. Write the value to the appropriate parameter register.

Format Words (R46,000 to R46,999)

Format words are unsigned integers that contain up to three values (described below).

The number of values used in the format words depends on the Parameter Index Location

(P782) that is used.

Parameter P782 Parameter Index Location

, described on page 90, determines which of

two methods is used to access the format words: Global Index Method or Parameter

Specific Index Method.

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