Usb Service Port; Usb Driver Installation - Danfoss ECL Comfort 210 Instructions Manual

Instructions ECL Comfort 210 / 310, communication description

3. USB service port

The USB service port implements a Communication Device
Class (CDC) that allows Windows PCs to recognize the ECL
210/310 as a Virtual Serial Port, giving functionality of a point-
to-point Modbus RTU communication with the ECL.
The USB service port is similar to the RS-485 Modbus
interface, with the following changes:

Relaxed inter character timing in comparison to standard
serial line Modbus

Baud rate independent

Point-to-point communication, only the connected ECL
can be addressed (service address 254 can be used)
It is necessary to install the ECL USB driver on the PC before it
is possible to communicate with the ECL controller via USB.
The driver is available as a free download from
www.danfoss.com.

3.1 USB driver installation


Connect the ECL to the PC

When Windows asks for a driver, choose the appropriate
driver for your system (See the installation guide that
accompanies the driver). On Win2k and WinXP systems,
Windows will warn that the driver is not 'digitally signed'.
Ignore this message and continue with the installation.

Open the Windows Device Manager to verify that the
device is installed correctly.

A reboot is not necessary.
Danfoss District Energy
Figure3-1: USB connection example
VI.LG.V3.02
SCADA system:
Connected via Danfoss
Modbus OPC server
USB cable
DEN-SMT/DK
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