Eaton easyE4 User Manual

6. Function blocks
6.1 Manufacturer function blocks
Parameter set
 Description Note
Parameter set 
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.
The "Function block release by EN is
necessary" option is enabled by
default.
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
0 or 1 depending on the function
block.
Parameter display
+ Call enabled
Constants can be edited on the
device, as can function block para-
meters when using the EDP pro-
gramming language.

Simulation not possible


Acyclical Modbus RTU request – Parameters tab
The Acyclical Modbus RTU request – Parameters tab is used to configure the same
communication parameters as for the cyclical data in general – please refer to →
"Expansion parameter tab", page 779 .
The MU function block will send its acyclical Modbus RTU request to the selected
Modbus RTU slave module. The selected function code defines whether the oper-
ation will be a read or write operation, whether one or more elements are involved,
and whether the elements are of data type BIT or WORD. The function block will be
run for the number of elements. It will write or read the easyE4 marker range, starting
with word markers, to/from the slave's Modbus RTU map, beginning with the element
at index 1, see also → "Modbus RTU map", page 549
Fig. 247: Acyclical Modbus RTU request - Parameters tab
easyE402/24 MN050009ENEaton.com
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Eaton easyE4 Specifications

General

Brand	Eaton
Model	easyE4
Category	Relays
Language	English