Alien Beginners Guide
From RifidiWiki
Contents
Alien Reader
Logging in
To log in to an Alien ALR 9800, get to a command prompt, and type in
- Telnet <Reader_IP> <Reader_port>
This will bring you to a login prompt. Default username/password is "alien/password".
Commands
This will bring you to your first command prompt. This is where you will type in commands for the Alien. To read tags visible on any of the antennas, type in "t" and press enter.
There are also a few simple commands you can use to aid with output.
TagType
The TagType command is used to adjust which types of tags the reader searches for. It is represented by an integer between 1 and 31, with the binary representation of that number being the tags you will read. The chart for these commands looks like this:
- Gen1 "Quark"
- Gen1 "Omega"
- Gen1 "Lepton"
- Gen0
- Gen2
This sounds complicated, but in reality it is very simple. For example, if you want to read Gen1 tags, you just type in
- set TagType = 7
because that would mean that bits 1, 2, and 3 are all 1 (Its best to ignore the different types of gen1 tag and simply treat them all as a unit). If you wanted to read gen2 tags, you would type in
- set TagType=16
because this would mean that the 5th bit was 1, and everything else is 0. If you want to read all tag types, type in
- set TagType=31
AntennaSequence
Antennasequence controls which antennas you read from when you get a tag list, and in what order. For instance, if you type in
- set AntennaSequence=0,1,2
you would read off of antenna 0, then antenna 1, then antenna 2. You can also get fancier, such as this:
- set AntennaSequence=0,1,2,1,2,0
This would read off of 0, then 1, then 2, then 1 again, etc.
PersistTime
This command controls how long you want to keep a tag around in the Alien's memory before it is discarded. It is measured in seconds, so this command:
- set PersistTime=30
will keep the tag around in memory for 30 seconds after the reader has lost contact with it. The special case of
- set PersistTime=-1
will keep the tags around in memory indefinitely until they are read.
