Specifications

Revision 2.4 WebRelay-Quad™ Users Manual
2.2.2 Network Connection
Connect the Ethernet port to a 10 Base T or 10/100 Base T Ethernet connection. This typically
connects to an Ethernet hub, switch, or router. For configuration, WebRelay-Quad™ may be
connected directly to the Ethernet port on a computer using a “crossover” cable. Otherwise for
connection through a hub or router, a standard “straight-thru” cable should be used.
2.2.3 Relay Connection
The relay contacts internally connect directly to the 14-pin connector. No internal fuse is provided.
The relay contacts are rated at 1 Amp max (28V max). For larger loads, an external relay may be
used to control the load.
2.3 Establishing Communications for Setup
WebRelay-Quad™ is set up using a web browser. The first task is to establish communications
between a computer and the WebRelay-Quad™ device so that the browser-based configuration
can begin. To do this, the computer and WebRelay-Quad™ must be physically connected to the
same network and both must have IP addresses on the same network. There are two ways to set
up the computer and WebRelay-Quad™ so that they are on the same network. The first way
(Option 1), is to change the IP address of WebRelay-Quad™ to an address that is on the same
network as the computer. The second way (Option 2) is to change the IP address of the computer
to an address that is on the same network that WebRelay-Quad™ is set to by default.
2.3.1 Option 1: Assign a temporary IP address to WebRelay-Quad™
This option is used to TEMPORARILY assign an IP address to WebRelay-Quad™ without the
need to change the IP address of the configuration computer. Note that WebRelay-Quad™ will
only use this IP address as long as power is maintained. Once power is lost and restored,
WebRelay-Quad™ will use the IP address assigned in the setup page and not the temporary
address assigned here. This means that once communications are established, the desired IP
address should be entered into the network setup page using the browser.
To assign the temporary IP address...
1. Make sure WebRelay-Quad™ and the configuration computer are connected to the same
physical network. This will not work through routers or gateways.
2. Assign the address as follows...
Windows :
Open a Command Prompt (on Windows XP, select START, then RUN, then type “cmd”).
Type...
arp -s {new IP address} {serial number of WebRelay-Quad™ }
Note: IP address format is: xxx.xxx.xxx.xxx
Serial number format is: ss-ss-ss-ss-ss-ss
For example, to set a WebRelay-Quad™ device (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
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.
Xytronix Research & Design, Inc. page 14