Honeywell EK280 Applications Manual page 156

EK280
If a connected RS485 interface device has a direct or capacitive ground potential connection, there is a risk
of interference coupling via ground loops, which may affect pressure or temperature measurements. The
position of the two jumpers on X5 means that the EK280 interface is electrically isolated from the rest of the
circuit and therefore electromagnetic interference coupling is prevented.
To power the decoupled EK280 interface a voltage of between 5 and 8 volts (3 mA approx.) must be
connected to the "Ri" and "GND" terminals.
7.5.3.3 Parametrization of the EK280
i
For parameterization of the EK280 you need a connection cable for the optical interface as well
as the enSuite program. enSuite can be downloaded free of charge from the Honeywell website
in the "Software Downloads" section:
www.elster-instromet.com/en/software-downloads
a) Closing the time windows
In order that the parameterization works correctly the time windows 5 and 6 must be closed. To do this:
− Connect a PC or laptop with enSuite installed to the EK280 optical interface using the connection
cable.
− Start enSuite and set up the communication link to the EK280.
( chapter 3.1 Setting up the communication link to the EK280 via optical
− Select "Navigation" on the left-hand side and then
navigation window.
− In the top of the device window open the path "Parameters" > "Interfaces" by clicking on the relevant
plus signs, and then select
− In call windows 5 and 6 set start and end to the same value for each one and then select the
"Transfer changes to device" icon at the top of the enSuite window.
− Then wait a minute, for any communications activity in progress on the EK280 to be safely stopped.
b) Send parameter file
− Send the following parameter file to the EK280 ( chapter
− EK280_xvx. - RS485 (without Modem) (*)
− For the following customized settings and tests required, press "Navigation" on the left-hand side
and then "Parameterize
i
All the values listed in enSuite under "Parameters" can be found on the "Serv." display tab of the
EK280 under the same path.
c) Setting the device address
Each bus participant needs a unique identifier ("device address" or "bus address"), so that the bus master
can select a single data transmission subscriber. The device address set in the EK280 depends on which
interface protocol it uses:
37 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
"Call time windows".
37
online" at the bottom of the navigation window.
interface, p. 19)
"Parameterize online" at the bottom of the
3.6 Send parameter
154
file, p. 21):