User Manual Owner's manual

Publication 1757-UM006A-EN-P - May 2002
A-16 Standard Function Block Parameters
Table A.43 FF_SCALE
Table A.44 FF_VAL
Table A.45 FIELD_VAL
Classification
Record
Description
Defines the feed-forward input high and low scale values, engineering units
code, and number of digits to the right of the decimal.
FF Data Type
DS-68
Range
0-100 percent
Usage
C/Scaling
Length
11
Valid Views
VIEW_4
Storage
Static
Remarks
The Data type consists of data that describes floating point values for display
purposes. It uses the following four elements.
• Engineering Units at 100 percent
• Engineering Units at 0 percent
• Units Index
• Decimal Point
Classification
Record
Description
Represents the feed-forward value.
FF Data Type
DS-65
Usage
I/Input
Length
5
Valid Views
VIEW_3
Storage
Non-Volatile
Remarks
Read Only
The Data type consists of the value and status of floating point parameters
that are Inputs or Outputs. It uses the following two elements.
• Status
• Value
Classification
Record
Description
Represents the raw value from the field device in percent of transducer span,
with a status reflecting the transducer condition, before signal characteriza-
tion (L_TYPE) or filtering (PV_FTIME).
FF Data Type
DS-65
Usage
C/Contained
Length
5