Establishing Communications For Setup - Xytronix Research & Design WebRelay-10 X-WR-10R12-I User Manual

Installation and Setup

2.3 Establishing Communications for Setup

In order to configure WebRelay-10 with the web browser interface, WebRelay-10 must be connected to
an Ethernet computer network. This can be done by one of two methods:
Method 1 – Assign a temporary IP address of WebRelay-10 to work on an existing network.
-or-
Method 2 – Temporarily change the IP address of a connected computer to the match the default IP
address used by WebRelay-10.
Note: If multiple ControlByWeb™ products are used on the same network, install one at a time and set
the IP address of each unit before connecting the next unit to the network. This avoids having multiple
devices being installed on the network with the same factory default IP address at the same time. If this
approach is used, be sure to clear the arp cache after disconnecting each unit (arp -d).
2.3.1 Method 1: Assign a Temporary IP address to WebRelay-10
This option is used to TEMPORARILY assign an IP address to WebRelay-10 without the need to change
the IP address of the configuration computer. WebRelay-10 will use this IP address as long as power is
maintained. Once power is lost, WebRelay-10 will use the IP address assigned in the setup page and
not the temporary address assigned here.
Make sure that WebRelay-10 and the configuration computer are connected to the same network.
This will not work through routers or gateways.
Microsoft Windows Instructions
1. Open a Command Prompt (select START, then RUN, then type "cmd").
Note: For Vista, the Command Prompt should be run as administrator (select Start, then type "cmd"
and right click on "cmd" and select "Run as administrator").
2. Type:
arp -s {new IP address} {serial number of WebRelay-10 }
Note: IP address format is xxx.xxx.xxx.xxx. The serial number can be found on a label on the
module board. The format is ss-ss-ss-ss-ss-ss.
For example, to set WebRelay-10 (with serial number 00-0C-C8-01-00-01 ) to 10.10.10.40 the
following command would be used:
arp -s 10.10.10.40 00-0c-c8-01-00-01
3. Next, type:
ping -l 102 {new IP address}
For example, if the new IP address is 10.10.10.40, the following command would be used:
ping -l 102 10.10.10.40
4. Proceed with WebRelay-10 setup in section 2.4.
Once setup is complete, it may be necessary to clear the 'arp' cache to configure additional
WebRelays. This is necessary because each unit has the same default IP address, but a different
unit serial number (MAC address). Clearing the arp table can be done by typing arp -d in the
command prompt window.
Linux/Unix Instructions
1. Open a terminal and change to root user (su -, then enter root password).
2. Type:
page 16
WebRelay-10 Users Manual
Xytronix Research & Design, Inc.