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6. Function blocks
6.1 Manufacturer function blocks
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 4…50 000.
The following formula applies: 10 000 = 1
kHz.
The measurable frequency range is
0.4…5000 Hz.
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
SN - Output bit via NET (send)
x
N - Network marker bit
x
nN - NET station n marker
x
LE - Output backlight
x
Q - Bit output from another FB
x
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:
226
easyE4
11/18 MN050009 EN www.eaton.com
Содержание easyE4 series
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Страница 22: ...0 1 About this manual 18 easyE4 11 18 MN050009 EN www eaton com...
Страница 40: ...1 easyE4 control relays description 1 10 Safety regulations 36 easyE4 11 18 MN050009 EN www eaton com...
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Страница 462: ...6 Function blocks 6 4 Timing and counter relay example 458 easyE4 11 18 MN050009 EN www eaton com...
Страница 490: ...7 System settings 7 16 Time and Date setting 486 easyE4 11 18 MN050009 EN www eaton com...
Страница 520: ...9 easyE4 inside 9 7 NET network 516 easyE4 11 18 MN050009 EN www eaton com...
Страница 524: ...10 Diagnostics messages of the operating system 10 2 Diagnostics buffer 520 easyE4 11 18 MN050009 EN www eaton com...
Страница 570: ...11 Connection to other devices 11 6 E mail function 566 easyE4 11 18 MN050009 EN www eaton com...
Страница 578: ...12 Faults 12 4 Functionality of the NET faulty 574 easyE4 11 18 MN050009 EN www eaton com...
Страница 582: ...13 Maintenance 13 3 Storage transport and disposal 578 easyE4 11 18 MN050009 EN www eaton com...
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