Description
Original instructions
Function description
The function block monitors the input variable X to detect whether it exceeds the upper limit.
NOTE: If you need to monitor the lower limit you can use the INDLIM_*** function block.
The data types for all input values must be the same.
EN and ENO can be configured as additional parameters.
Available functions
The following blocks are available:
Representation in FBD
Representation:
Representation in LD
Representation:
Representation in IL
Representation:
CAL HYST_Instance (X:=Input, HIGH:=MaxHighLimit, 
    LOW:=MinHighLimit, IND=>Indicator)
Representation in ST
Representation:
HYST_Instance (X:=Input, HIGH:=MaxHighLimit, 
    LOW:=MinHighLimit, IND=>Indicator) ;
Parameter description
Input parameter description:
Parameter
Data type
Meaning
X
Input variable
HIGH
INT, DINT, UINT, UDINT, REAL
Maximum upper limit
LOW
INT, DINT, UINT, UDINT, REAL
Minimum upper limit
Output parameter description:
Parameter
Data type
Meaning
IND
Display: Upper limit reached