6. Function blocks
6.1 Manufacturer function blocks
Function block outputs
 Description Note
(bit) 
Q1
1: if the status of the trigger coil
PT..T_ is also 1.

AC
1: As soon as a transmit job is activ-
ated, or as soon as one is aborted
with an error message at output E1.
This bit output is used for check-
ing whether the required value
was transferred to the NET.
E1
Error - NET transmission error
1: If the value could not be sent and
the previously set AC output changes
from a state of 1 back to 0.
The output will remain with a state of
1 until a new transmit job is activ-
ated.

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
Q – Bit output
x
I – Bit input of a FB
x
2)
Only on projects with ≥ 2 base devices on NET 
Parameter set
 Description Note
Function block release by
EN is necessary
If this checkbox is enabled, the
state of function block input EN will
be evaluated. If the checkbox is dis-
abled instead, the function block
will be enabled and function block
input EN will not do anything.
This parameter ensures that
when existing programs are
copied, the functionality of the
function blocks that are carried
over will be retained. The para-
meter will be automatically set to
easyE402/24 MN050009ENEaton.com
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