Eaton easyE4

6. Function blocks
6.1 Manufacturer function blocks
NOTICE
Avoid unforeseeable switching states.
Switch C, CF, CH, CI function blocks only at one single point in the pro-
gram.
Otherwise, previous counts will be overwritten.
The function block and its parameters
Function block inputs
 Description Note
(bit) 
EN
1: Activates the function block.
The checkbox for the
Function block release by EN
is necessary
parameter must first be enabled
D_
Count direction
0: up counting
1: down counting

SE
The starting value at SV is applied
whenever there is a rising edge at
this input

RE
Reset
1: QV=0

(DWord) 
SH
Counter relay
Integer value range:
-2,147,483,648 to +2,147,483,647


SL
Lower threshold value
SV
Start value (Pre Set)
Assigning operands
You can assign the following operands to the function block inputs that are numeric
inputs.
Operands Value inputs
Constant, timer constant
1)
x
MD, MW, MB - Markers
x
NB, NW, ND - NET markers
2)
x
nNB, nND, nND- NET markers
2)
NET station n
x
IA - Analog input
x
QA - Analog output
x
QV - QV - Numeric output of a FB
x
1)
Only on function blocks T, AC
2)
Only on projects with ≥ 2 base devices on NET
You can assign the following operands to the function block inputs that are bit inputs:
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