CH Tech EM405D - Manual (Page 20)

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4.2.6.1 Wed-based Configuration
To use the wed-based interface to configure the wired EM405D, open a Java enabled web
browser and enter the device’s IP address as the web address to open. This will download and
run a Java applet from the device allowing the user to make changes to the devices configuration.
Navigate through the pages of the web interface making the necessary changes to the
configuration. When finished, click on the “Update Settings” button to apply the changes.
Note: If the web page does not display or operate correctly, there may be some incompatibilities
between the Java applet and the Java run-time environment on the PC. This is especially
true for users using Microsoft Internet Explorer and the Microsoft Java Virtual Machine.
It is recommended that the user download the latest Java runtime environment from
www.java.com and disable the Microsoft Virtual Machine. The java applet served by the
wired EM405D is compatible with Java 1.3.1x or higher.
4.2.6.2
Telnet Configuration
To use the telnet interface, open a telnet session to port 9999 at the device’s IP address. In
Windows, this can be done by opening a command prompt window or going to Run under the
Windows Start menu and in both cases typing the following, where x.x.x.x is the IP address:
telnet x.x.x.x 9999
PC’s running environments other than Windows may require a different instruction but the
concept remains the same. Once a telnet session is opened, the screen will display the
configuration utility. Navigate through the various menu items and follow the instructions to
configure the module. The configurations are not applied until the telnet session is exited with
the Save and Exit menu item.
4.2.6.3
Configuring a Device with an Unknown IP address
To configure the device through either the web-based interface or the telnet interface, the
EM405D must be connected to a network and have a valid IP address known to the user. This
creates an obvious dilemma. How do you configure a device via the network if it is not
configured for the network? The EM405D provides a method to overcome this dilemma using a
process sometimes referred to as address “gleaning.” This method uses the Address Resolution
Protocol (ARP) and telnet to assign a temporary IP address to the device. This temporary
address can then be used to connect to the web-based interface or the telnet interface to configure
the device for the network. To assign a temporary IP address to a device using this method:
1) Locate the device’s hardware (MAC) address and write it down. The address is
displayed on a label inside the EM405D’s cover. View the label by removing the two
screws at the front of the module, removing the front panel, then sliding the top cover of
the enclosure forward, exposing the rear section of the PCB. The MAC address can be
found on the device that the Ethernet cable physically plugs into. It is a six part number