Eaton easyE4

6. Function blocks
6.1 Manufacturer function blocks
Operands Bit inputs
P device buttons
x
I - Bit input
x
Q - Bit output
x
Q - Bit output of a FB
x
2)
Only on projects with ≥ 2 base devices on NET
Function block outputs
 Description Note
(bit) 
OF
Overflow
1: if QV ≥ SH

FB
Fall Below
1: if QV ≤ SL

ZE
Zero
1: if QV = 0

(DWord)
QV
QV outputs the number of pulses detected per
measuring interval
The function block operates in the integer
value range from 0…50 000.

QF
QF outputs the measured frequency*10.
The function block operates in the integer
value range from 0…50 000.
The following formula applies: 10 000 = 1
kHz.
The measurable frequency range is
0…5000 Hz.
Assigning operands
You can assign the following operands to the function block outputs that are numeric
outputs:
Assigning operands Value outputs
MB, MD, MW – Markers
x
NB, NW, ND – NET markers
2)
NET station n
x
QA – Analog output
x
I – Value input of a FB
x
2)
Only on projects with ≥ 2 base devices on NET 
You can assign the following operands to the function block outputs that are bit out-
puts:
Assigning operands Bit outputs
M - Markers
x
SN – Output bit via NET (send)
2)
SN - Output
bit via NET (send)
x
N – Network marker bit
2)
x
LE – Output backlight
x
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