138 | Managing the Radio
Aprisa SRi User Manual 1.1.0
Terminal Server
This menu item is only applicable if the serial port has an operating mode of Terminal Server.
The Terminal Server operating mode provides encapsulation of serial data from a local serial port into an IP
packet (over TCP or UDP). This function is typically used for connecting a legacy serial RTU at a remote
radio to an Ethernet SCADA server.
Mode
This parameter defines the mode of operation of the terminal server connection. The default setting is
Client and Server.
Option
Function
Client
The radio will attempt to establish a TCP connection with the
specified remote unit. Generally, this setting is for the base station
with an Ethernet connection to the SCADA master.
Server
The radio will listen for a TCP connection on the specified local
port. Generally, this setting is for the remote radio with a serial
connection to the RTU.
Data received from any client shall be forwarded to the associated
serial port while data received from that serial port shall be
forwarded to every client with an open TCP connection.
If no existing TCP connections exist, all data received from the
associated serial port shall be discarded.
Client and Server
The radio will listen for a TCP connection on the specified local
port and if necessary, establish a TCP connection with the
specified remote unit. Generally, this setting is used for the
remote radio, but it should be used carefully as two connections
might be established with the base station.
Data received from any client shall be forwarded to the associated
serial port while data received from that serial port shall be
forwarded to every client with an open TCP connection.