User Manual Owner's manual

Publication 1757-UM006A-EN-P - May 2002
A-32 Standard Function Block Parameters
Pxxx Blocks
Table A.86 PV
Table A.87 PV_D
Table A.88 PV_FTIME
Classification
Record
Description
Represents either the primary analog value for use in executing the function,
or a process value associated with it. It may also be calculated from the
READBACK value of an Analog Output block.
FF Data Type
DS-65
Usage
C/Process Variable
Length
5
Valid Views
VIEW_1, VIEW_3
Storage
Dynamic
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 either the primary discrete value for use in executing the function,
or a process value associated with it. It may also be calculated from the
READBACK_D value of a Discrete Output block.
FF Data Type
DS-66
Usage
C/Process Variable
Length
2
Valid Views
VIEW_1, VIEW_3
Storage
Dynamic
Remarks
Read Only
The data type consists of the value and status of discrete value parameters. It
uses the following two elements.
• Status
• Value
Classification
Simple Variable
Description
Defines the time constant of a single expotential filter for the Process Variable
in seconds.
FF Data Type
Float
Range
Positive
Usage
C/Contained