Eaton easyE4 Manual page 294

6. Function blocks
6.1 Manufacturer function blocks
290
Function block outputs
Description
(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
QF QF outputs the measured frequency*10.
Assigning operands
You can assign the following operands to the function block outputs that are numeric
outputs:
Assigning operands
MB, MD, MW - Markers
NB, NW, ND - NET markers
NET stations n
QA - Analog output
I - Value input of a FB
2) Only on projects with ≥ 2 base devices on NET
You can assign the following operands to the function block outputs that are bit outputs:
Assigning operands
M - Markers
SN - Output bit via NET (send)
bit via NET (send)
2)
N - Network marker bit
LE - Output backlight
Q - Bit output
I - Bit input of a FB
2) Only on projects with ≥ 2 base devices on NET
Example with CF01 with 50 Hz at the input
There is a square wave signal with a frequency of 50 Hz at device input I01. Outputs QV
and QF of function block CF01 will have the following values depending on the chosen
measuring interval:
easyE4 10/19 MN050009 EN www.eaton.com
Value outputs
x
2)
x
x
x
Bit outputs
x
2)
SN - Output x
x
x
x
x
Note
The function block operates in the integer
value range from 0...50 000.
The function block operates in the integer
value range from 4...50 000.
The following formula applies: 10 000 = 1
kHz.
The measurable frequency range is
0.4...5000 Hz.