Patton electronic 2120 用户手册

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For a detailed definition of all 2120 system commands, valid entries, and 
defaults see Appendix B on page 59. 
Note
Contact your Network Administrator if you have questions 
regarding configuration parameters required for your application 
and/or LAN.
3.6 SAMPLE 2120 CONFIGURATIONS
The Model 2120 features and functionality allow it to operate in thou-
sands of different applications; however, this section is not intended to 
cover all the possibilities.   The configuration samples provided below will 
describe some of the typical 2120 applications and the configuration set-
tings required for proper operation and serve as a useful reference when 
configuring the Model 2120 for your own application.  This section will not 
discuss in detail the serial devices connected to the Model 2120 and 
related operating systems and/or applications.  Actual configurations will 
vary from application to application based on the requirements and con-
figuration of the serial device and related operating systems and applica-
tions.
Telnet/TCP Operation
In the typical Telnet/TCP application (see Figure 6), the user has a need 
to remotely connect to a serial device located on the LAN for administra-
tion, configuration, monitoring, troubleshooting, data collection, etc.  To 
enable the remote connection via Telnet session, the Model 2120 is usu-
ally assigned a static IP address.  The user then launches a Telnet/TCP 
session from their Computer specifying the IP Address of the Model 
2120 and port number and remotely connecting to it over the LAN.  Once 
connected, the Telnet/TCP client converts the asynchronous data into 
TCP packets and sends it over the LAN to the IP address of the Model 
2120.  When received, the Model 2120 converts the packets back to 
asynchronous data and forwards the data to the device connected to the 
serial interface.  The serial device sends asynchronous data back to the 
Model 2120 and the Model 2120 converts the data into TCP packets and 
sends it over the LAN back to the originating Telnet/TCP client and is 
converted to asynchronous data to complete the cycle.  Once the 
desired tasks are performed, the Telnet session is usually terminated.