Alien Technology LLC B2450R01 Manual De Usuario

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CHAPTER
 
R
EADER
-H
OST 
P
ROTOCOL
 
Example 
Command 
Response 
>Get TimeZone 
>TimeZone = -8   
 
>Set TimeZone = 3 
>TimeZone = 3 
 
G
ET 
T
IME
S
ERVER
 
S
ET 
T
IME
S
ERVER
 
 
The reader uses the Internet to accurately set its internal clock every time it is 
rebooted. The protocol it uses is called the Daytime Protocol (RFC-867) which 
typically returns the time in UTC format.  
 
In order to use this feature, a TimeServer must be specified. This is the network 
address of a machine that is constantly running the Daytime Protocol. In the US 
there are a number of machines owned and operated by the Government 
explicitly providing the time and date to Internet users.  
 
•  By default the reader is configured to connect to one of these machines on 
boot-up to get the current time. 
 
•  For a more in-depth description of this server, and a list of other publicly 
accessible Daytime Protocol Servers, see: 
http://www.boulder.nist.gov/timefreq/service/its.htm
 
 
•  The default setting for this command is 132.163.4.101, a primary NIST 
network time server. Some alternative time servers are: 
time-a.nist.gov / 
129.6.15.28 
time-b.nist.gov / 
129.6.15.29 
time.nist.gov / 
192.43.244.18 
 
NOTE: After making changes with this command, you must reboot the reader to 
implement the changes. 
 
Example 
Command 
Response 
>Get TimeServer 
>TimeServer = 129.6.15.28 
 
>Set TimeServer = 129.6.15.28 
>TimeServer = 129.6.15.28 
 
The TimeServer is only used once when the reader is booted up. A message in 
the boot sequence (sent out to the serial console) indicates success or failure of 
this option.  
 
For example, a successful boot sequence will report the following messages to 
the serial console: 
 
Booting Alien RFID Reader 
Boot> Boot Level 1 (Console Communication) : Success 
Boot> Boot Level 2 (Reader Communication) : Success 
Boot> Boot Level 3 (Tag Manager) : Memory for 1000 Tags