ThingMagic Sargas User Guide
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7 Network Settings
You can set up the Sargas Reader to use a DHCP server, Link Local peer negotiation, or manual entry as an IP
address source. By default, the Reader boots up looking for a DHCP server. If no DHCP server is found it will
negotiate a Link-local address with your PC and any other devices on the network. Optionally, you can have the
reader use a static address as a primary or fallback instead of a link-local address.
DHCP will automatically provide the Reader's IP address, subnet mask, default gateway, NTP Server, and DNS
server. It will also establish a hostname and provide it to the DNS (Domain Name Service) Server. During the
initial boot sequence, if the Reader does not get a DHCP-assigned IP address, a link-local address will be
negotiated with any connected device(s). However, the Reader will periodically check to see if a DHCP server is
available. See the Troubleshooting Table
for assistance determining the IP address if you cannot access the
reader using the URL hostname.
The following section explains how to set up your PC and Reader on a network.
7.1
Setting Up the Network Hardware
Whether you use DHCP, link-local, or static network addressing, make sure that the network is connected
before powering up the Reader. With default settings, if the Reader does not automatically get the address from
a DHCP server, a link-local address will be negotiated with the local network. DHCP addressing can only be
used as a primary method. Either static or link-local addressing can be used as a primary method or as a
fallback method if DHCP address assignment is unavailable. Neither static nor Link-local addressing can be
used as a fallback method for the other.
Before setting up your network:
Connect one end of an Ethernet cable to the Reader and the other end to an Ethernet switch or
hub.
Check that all antennas are securely connected, and then power-up the Reader.
Connect your PC to the same network as that of the Reader.
Note
Some older 10baseT network hubs may not work properly with the Reader. If you encounter connectivity
problems, we recommend using nothing below 10/100baseT hubs/switches.
7.1.1.1 Using Ethernet Power (PoE)
Another desirable way of powering up the Sargas Reader is to use a single Ethernet cable that is both a
communication link and a power source, called Power Over Ethernet (POE). Although the Sargas Reader does
not support POE directly, we have pre-qualified several devices which extract a 5V power source from the POE-
enabled cable, while blocking the potentially harmful DC power from reaching the Sargas
ʼ Ethernet interface.
Sargas requires an injector that takes POE Ethernet and splits it into non-POE Ethernet and 5V DC, with
enough power to run Sargas and a connector that is compatible with Sargas. The company successfully tested
with:
