6. Function blocks
6.1 Manufacturer function blocks
Operating ranges
l X > XH
Q1 switches one to X < ( XH – H1)
l X < –XH
Q2 switches one to X > -XH + H2
If the switching conditions for Q1 and Q2 are not met, both outputs will be switched off
to 0.
Only Q1, or Q1, or neither one can be switched on at any one
time.
The function block and its parameters
Function block inputs
Description Note
(Bit)
EN 1: Activates the function block.
(DWord)
I1 Setpoint -32768…+32767
I2 Actual value -32768…+32767
H1 Hysteresis value 1 0…32767
H2 Hysteresis value 2 0…32767
XH Distance from switching point 0…32767
Contact distance
TC Cycle time 0…65535
In 0.1 ms; value of 10 = 1 s. If the value =
0, the function block will go through every
cycle.
Assigning operands
You can assign the following operands to the function block inputs that are numeric
inputs.
Operands Numeric inputs
I1, I2, H1, H2, XH, TC
Constant x
Markers MD, MW, MB x
Analog inputs IA x
Analog output QA x
Numeric output from a different FB x
You can assign the following operands to the function block inputs that are bit inputs:
Operands Bit inputs
EN
Constant 0, constant 1 x
M – Markers x
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easyE4 11/18 MN050009 EN www.eaton.com