Eaton easyE4 series Manual page 249

The function block and its parameters
Function block inputs
Description
(Bit)
EN 1: Activates the function block.
(DWord)
I1 Comparison value 1
I2 Comparison value 2
F1 Gain factor for I1 (I1 = F1 * value)
Default value = 1
F2 Gain factor for I2 (I2 = F2 * value)
Default value = 1
OS Offset for the value at I1,
I1 OS = OS + actual value at I1;
HY Switching hysteresis for value at I2.
To calculate the hysteresis band (dead band) limited by the
upper and lower hysteresis threshold), the function block
takes into account the value HY as well as positive and neg-
ative components.
I2 HY = Actual value at I2+ HY,
I2 HY = Actual value at I2 - HY);
Assigning operands
You can assign the following operands to the function block inputs that are numeric
inputs.
Operands
Constant, timer constant
MD, MW, MB - Markers
NB, NW, ND - NET markers
nNB, nND, nND- NET markers
NET stations n
IA - Analog input
QA - Analog output
QV - QV - Numeric output of a FB
You can assign the following operands to the function block inputs that are bit inputs:
easyE4 11/18 MN050009 EN www.eaton.com
6.1 Manufacturer function blocks
Note
The check-
box for the
block release
by EN is
necessary
parameter
must first be
enabled
Integer value
range:
-2,147,483,648
to
+2,147,483,647
Value inputs
x
x
x
x
x
x
x
6. Function blocks
Function
245