Eaton easyE4 User Manual

6. Function blocks
6.1 Manufacturer function blocks
32 bit mode
Only available on easySoft Version 7.40 or higher.
Only available on firmware version 1.40 or higher.
Otherwise this option will not be available.
Enable this option if you want register contents that are written or read with function
codes FC3, FC4, FC16, FC23 to be interpreted as double words. This will cause two
consecutive word registers to be combined into a double word. The number of ele-
ments per request can then be exclusively in steps of two.
This option is also important when it comes to data interpretation regarding the byte
order.
1. Requirement
The parameters for the 1st request are used to define the easyE4 marker range on
which the function code will be run. The range's word markers will be either written
to the Modbus TCP server or read from it and stored in the easyE4's word markers.
Start
address

The address of the first Modbus TCP server register that should be written to or
read. The value range is 0 to 65535.
Keep the 0-based address system in mind.
If the address range does not match the Modbus server's address
range because the former starts from 0 and the latter from 1, you
will need to use an offset.
In this case, you will need to set the start address to the original
value minus 1.
Alternatively, the option Auto-decrement on all addresses can be
activated with a checkmark.
No. of Ele-
ments

The number of elements that will be read from the server's Modbus TCP map in
the easyE4 marker range or that will be written from the easyE4 marker range to
the server's Modbus TCP map.
Depending on the specific function code, "element" may refer to different data
formats of data type BIT or WORD.
Marker
assign-
ment

The marker word selected in the Marker assignment field is the starting point of
the marker range for which the function block will run the function codes. The ele-
ments will be written from the easyE4 marker range or read in it.
The value range is 1 to 512.
Make sure not to overwrite any marker range registers or sections.
2nd write request (FC23 only)
The range for the 2nd write request will be shown exclusively for function code FC23
and must be defined under the tab.
Fig. 239: Acyclical Modbus TCP request - 2nd write request tab
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easyE402/24 MN050009ENEaton.com

Eaton easyE4 Specifications

General

Brand	Eaton
Model	easyE4
Category	Relays
Language	English