5.3 Description of Function Codes
5-259
FUNCTION CODES
Chap 5
Block
selection
(U01 etc.)
Function block
Description
Function 1
(U04 etc.)
Function 2
(U05 etc.)
2055 Comparator 5 Comparison function with hysteresis.
Input 1 is the input value of this function and input 2 is not
used.
The 1st function code provides threshold value and the
2nd one provides hysteresis width.
If input 1 is (threshold value) or bigger, this function
outputs logical “1: True”. On the other hand If input 1 is
smaller than (threshold value - hysteresis width), this
function outputs logical “0: False”.
Threshold
value
width
2056 Comparator 6 Comparison function with hysteresis.
Input 1 is the input value of this function and input 2 is not
used.
The 1st function code provides threshold value and the
2nd one provides hysteresis width.
If input 1 is (threshold value) or smaller, this function
outputs logical “1: True”. On the other hand If input 1 is
bigger than (threshold value + hysteresis width), this
function outputs logical “0: False”.
Threshold
value
width
2071 Window
comparator 1
Comparison function with limits.
Whether the value of the input is within a preselected
range specified with two function codes determines the
status of the output.
Input 1 is the input value of this function and input 2 is not
used.
The 1st function code provides upper threshold value and
the 2nd one provides lower threshold value.
If input 1 is within the range (defined with two function
codes), this function outputs logical “1: True”. On the other
hand If input 1 is outside of this range, this function
outputs logical “0: False”.
Upper
threshold
Lower
threshold
2072 Window
comparator 2
Comparison function with limit.
This function has the inverting logic of “Window
comparator 1”.
Upper
threshold
Lower
threshold
2101 High selector High selector function.
This function receives two inputs (input 1 and input 2),
selects the higher one automatically, and outputs it.
This function has output limiters (upper/lower) specified
with two function codes.
The 1st function code provides the upper limit value and
the 2nd one provides the lower one.
Upper limit Lower limit
2102 Low selector Low selector function.
This function receives two inputs (input 1 and input 2),
selects the lower one automatically, and outputs it.
This function has output limiters (upper/lower) specified
with two function codes.
The 1st function code provides the upper limit value and
the 2nd one provides the lower one.
Upper limit Lower limit
2103 Average of
inputs
Average function.
This function receives two inputs (input 1 and input 2),
averages them, and outputs the result.
This function has output limiters (upper/lower) specified
with two function codes.
The 1st function code provides the upper limit value and
the 2nd one provides the lower one.
Upper limit Lower limit
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