Eaton easyE4

6. Function blocks
6.1 Manufacturer function blocks
Operands Bit inputs
N - Net marker bit
2)
x
nN - NET marker bit
2)
NET station n
x
ID: Diagnostic alarm
x
LE - Output backlight
x
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
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 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
x
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easyE402/24 MN050009ENEaton.com