gefran 850 Installation And Instruction Manual page 237

logical value.
DOWN COUNTER with prescaler x 1000: : decreases the
value of the analogue output of the Math Function, starting
with the value of the parameter connected with analogue
"Input a", every time the parameter connected with digital
input "Input d" switches from low logical value to high logical
value (rising edge) one thousand times.
The value of the analogue output of the Math Function Block
will remain at zero for as long as the value of the parameter
connected with digital input "Input c" keeps RESET input
high.
The digital output of the Math Function Block will take on the
logical value HIGH when the value appearing on the analogue
output of the Math Function Block is zero. Until then, the
digital output of the Math Function Block will remain on LOW
logical value. digital input "Input d" switches from low logical
value to high logical value (rising edge) one hundred times.
Type 4 oforations : COMPARISON of (a, b) with digital output
GREATER keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is less
than or equal to the value of the parameter connected
with "Input b".
The digital output of the Math Function Block HIGH if the
value of the parameter connected with "Input a" is greater
than the value of the parameter connected with "Input b".
LESS keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is grea-
ter than or equal to the value of the parameter connected
with "Input b".
The digital output of the Math Function Block HIGH if the
value of the parameter connected with "Input a" is less
than the value of the parameter connected with "Input b".
GREATER OR EQUAL keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is less than
the value of the parameter connected with "Input b".
The digital output of the Math Function Block HIGH if the
value of the parameter connected with "Input a" is greater
than or equal to the value of the parameter connected with
"Input b".
80209C_MHW_850-1650-1850_01-2020_ENG_pag. 235
LESS OR EQUAL keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is greater
than the value of the parameter connected with "Input b".
The digital output of the Math Function Block HIGH if the
value of the parameter connected with "Input a" is less
than or equal to the value of the parameter connected
with "Input b".
EQUAL keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is dif-
ferent from the value of the parameter connected with
"Input b".
The digital output of the Math Function Block HIGH if
the value of the parameter connected with "Input a" is
the same as the value of the parameter connected with
"Input b".
NOT EQUAL keeps :
The digital output of the Math Function Block LOW if the
value of the parameter connected with "Input a" is equal
to the value of the parameter connected with "Input b".
The digital output of the Math Function Block HIGH if
the value of the parameter connected with "Input a" is
different from the value of the parameter connected with
"Input b".