Reading Parameters; Global Index Method (P782 = 0) - Siemens HydroRanger 200 Instruction Manual

To determine the index values, the primary and secondary index must be read or write.
The two possible methods of handling these index values are described in the following
Global Index Method
paragraphs:

Reading Parameters

To read parameter values, follow the steps listed in either the Global or the Parameter
Specific Index Method that follow. You must be able to program your HMI or SCADA
system before completing these methods.

Global Index Method (P782 = 0)

Global format method sets index values for all parameters simultaneously. Use this
method to read multiple values set to the same index values.
1. Write the primary index value into R43,999.
This is a value between 0 and 40 which specifies the input or output indexed by the
parameter.
Examples are:
• Transducer 1 is index 1
• Discrete input 2 is index 2
• Relay 5 is index 5
2. Write the secondary index value into R43,998.
This is a value between 0 and 40 that specifies the secondary index on the
parameter. This value is usually 0.
3. Write the desired format value into the appropriate format register. Because the
primary and secondary indexes are already specified, these portions of the format
word are ignored and only the last digit is significant.
Format Registers
See
4. Read the value from the appropriate parameter register.
Types of values are:
Numeric Values
•
Bit Values
•
Split Values
•
Text Messages
•
Relay Function Codes (P111 Only)
•
A value of 22,222 indicates that an error has occurred. Specify a different format
type and try again.
7ML19985FC03
Parameter Specific Index Method
and
on page 113 for details.
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HydroRanger 200 – INSTRUCTION MANUAL
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