Allen-Bradley LOGIX 5000 Reference Manual page 104

Chapter 1 Process Control Instructions
104
POSITION_PROP Structure
Input Parameter Data Type
EnableIn BOOL
SP REAL
Position REAL
OpenedFB BOOL
ClosedFB BOOL
PositionEUMax REAL
PositionEUMin REAL
CycleTime REAL
OpenRate REAL
CloseRate REAL
MaxOnTime REAL
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Description
Enable input. If false, the instruction does not
execute and outputs are not updated.
Default is true.
Setpoint. This is the desired value for the position.
This value must use the same engineering units as
Position.
Valid = any float
Default = 0.0
Position feedback. This analog input comes from
the position feedback from the device.
Valid = any float
Default = 0.0
Opened feedback. This input signals when the
device is fully opened. When true, the open output
is not allowed to turn on.
Default is false.
Closed feedback. This input signals when the device
is fully closed. When true, the close output is not
allowed to turn on.
Default is false.
Maximum scaled value of Position and SP.
Valid = any float
Default = 100.0
Minimum scaled value of Position and SP.
Valid = any float
Default = 0.0
Period of the output pulse in seconds. A value of
zero clears both OpenOut and CloseOut. If this value
is invalid, the instruction assumes a value of zero
and sets the appropriate bit in Status.
Valid = any positive float
Default = 0.0
Open rate of the device in %/second. A value of
zero clears OpenOut. If this value is invalid, the
instruction assumes a value of zero and sets the
appropriate bit in Status.
Valid = any positive float
Default = 0.0
Close rate of the device in %/second. A value of
zero clears CloseOut. If this value is invalid, the
instruction assumes a value of zero and sets the
appropriate bit in Status.
Valid = any positive float
Default = 0.0
Maximum time in seconds that an open or close
pulse can be on. If OpenTime or CloseTime is
calculated to be larger than this value, they are
limited to this value. If this value is invalid, the
instruction assumes a value of CycleTime and sets
the appropriate bit in Status.
Valid = 0.0 to CycleTime
Default = CycleTime