Eaton easyE4 series, Manual

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6. Function blocks
6.1 Manufacturer function blocks
Operands Bit inputs
N - Net marker bit x
nN - NET marker bit NET station n x
ID: Diagnostic alarm x
LE - Output backlight x
P buttons x
I - Bit input x
Q - Bit output x
Q - Bit output of a FB x
Function block outputs
Description Note
(Bit)
OF Overflow
1: if QV ≥ SH OF=1, if the actual value QV is greater
than or equal to the upper threshold
value;
FB Fall below
1: if QV ≤ SL FB=1, if the actual value QV is less than
or equal to the lower threshold value;
CY Carry
1: if QV > value range If the value range is exceeded, the switch
contact switches to status 1 for one cycle
per rising edge detected. The function
block retains the value of the last valid
operation before the contact CY is set.
ZE Zero
1: if QV = 0
(DWord)
QV Current counter value in RUN mode Integer value range:
-2,147,483,648 to +2,147,483,647
Assigning operands
You can assign the following operands to the function block outputs that are numeric
outputs:
Assigning operands Outputs
Constant x
Markers: MB, MD, MW x
Analog inputs IA x
Analog output QA x
Numeric output from another QV FB x
You can assign the following operands to the function block outputs that are bit outputs:
Assigning operands Bit outputs
Constant 0, constant 1 x
M – Markers x
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