Modbus Via Rs232 Interface - Honeywell EK280 Applications Manual

EK280
8.1.6.4 Modbus Map
The Modbus map must be synchronized between the SPS and the EK280. If necessary, this can be adjusted
with enSuite. This is specifically applicable when:
− Other values should be transferred via Modbus (max. 70 values are possible).
− The data format needs to be adjusted.
− The Modbus Register Address must be changed (e.g. many systems specifie an "Offset" of 40000
for a "FC03" query).
− The data can be read out sequentially by means of a query in order to minimize transfer time/battery
life.
8.1.6.5 Help on commissioning
Since a Modbus connection always requires a balance between the end user, the programming of the PLC,
as well as the settings of the EK280, Honeywell's Homepage offers: "Products/Solutions/Service" /
"Support" / "DIAL commissioning" corresponding electrical connection help sheets for download. It also
contains the necessary prerequisites for a successful commissioning. On request, Honeywell also offers
support in the form of a mini-project. If necessary, please contact the Honeywell hotline.

8.1.7 Modbus via RS232 interface

In the EK280 communication via the terminal interface in RS232 operation can be via Modbus amongst
others. Values can be read and updated and archives can be retrieved.
8.1.7.1 Connection
RS232 interface connection is described in  chapters
jumpers (p. 147).
8.1.7.2 Parametrization of the EK280
a) Parameterization of the functions of the RS232 interface is described in  chapter 7.5.1.3.
b) Send parameter file for Modbus parameterization
− Send the following parameter file to the EK280 ( chapter
−
EK280_xvx. - RS232 & Modbus-RTU (via connection 5 & ext. power supply) (*)
c) For customized settings, the Modbus parameters can be set on the device under the path
"Interfaces" > "Terminal interface" > "Modbus"
i
All parameters listed on the EK280 "Admin" tab can be found in enSuite under "Parameters"
under the same path. To do this select "Navigation" on the left-hand side and then
online" at the bottom of the navigation window.
42 The "x" stands for the version of software on the device, e.g. "2v2".
The star * stands for a small letter which indicates the version of the file, e.g. "a".
Application Manual
7.5.1.1 Connection
3.6 Send parameter
( paragraph "d)").
(p. 146) and 7.5.1.2 EK280
file, p. 21):
42
"Admin" >
"Parameterize
173