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EDG-4508(R)+/4516(R)+ User Manual 44

Data Listen Port

The TCP(UDP) port number represents the source port number , and the

number is used to identify the channel for remote initiating connections.

Range: 1024-65533. If an unknown caller wants to connect to the system

and asks for some services, they need to define the TCP(UDP) port to

carry a long-term conversation.

Each node on a TCP/IP network has an IP address, and each IP address

can allow connections on one or more TCP port. The well known TCP

port are those that have been defined; for example, port 23 is used for Tel-

net connections. There are also custom sockets that users and developers

define for their specific needs. The default TCP (UDP) port of EDG-

4516(R)+ and EDG-4508(R)+ is 5200. The example initial 5200 is Sys-

tem Port, and 5201 is Data Port. But users can adjust them by one's pref-

erence or application.

Each port has its own data listen port to accept connected request of other

network device. So, the data listen port can’t be set the same value. You

can transmit/receive data to/from device via the data listen port.

Command Listen Port

Each port has its own command listen port to accept connected request of

other network device. So, the command listen port can’t be set the same

value. You can use ‘AT command’ to change the port setting via the com-

mand listen port. The Command Listen Port must be different from the

Data Listen port.

Data Idle Timeout

The default is 60 seconds. If you want to keep connection continually,

you can key-in “0”. Data idle Time is the time period in which the device

waits for data. If the EDG-4516(R)+ and EDG-4508(R)+ does not

receive data over an established idle time, the EDG-4516(R)+ and EDG-

4508(R)+ will disconnect temporarily. When the data comes to the EDG-

4516(R)+ and EDG-4508(R)+, it will reconnect automatically. Users do

not need to reconnect.

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Advantech EDG-4508R+ Manual de usuario Pagina 50