Titan Electronics Inc NETCOM423 Manuel D’Utilisation

This is a mixed mode, requiring 
parameters for server function 
and for the destination. The 
NetCom operates as a server 
while accepting connections in 
Driver 

Mode. If there is no 

current connection, the NetCom 
may establish a connection as a 
client. This is also a special 
connection, using the 
Driver Mode protocol. NetCom 
can will not only transmit serial 
data in both directions, it will 
also pass information about the 

current settings of the Modem Status lines. And it will itself set the 
Modem Control lines as required by the other host. Since this operation 
requires another NetCom to accept the connection, both NetCom 
together operate as a long Null-Modem cable. The data is sent via a 
tunnel through the network. 

 

Image 33: Web Panel Null Modem Tunnel 

The configuration as Server (top) requires the same parameters as the 
Driver Mode, hence “TCP Port(Control)” and “TCP Port(Data)”. 
The configuration as Client (bottom) first require a destination. Here it 
is given by name, but a direct IP-Address may be more usual. On the 
destination there is also a “TCP Port(Control)” and “TCP Port(Data)” to 
accept the connect of the NetCom. 
The connection is normally established in 

Triggered

 mode, i.e. when 

some event occurs on the serial port. It is hold for the defined 
“ShortHoldTime”. It is also possible to have the connection 

Permanent

. As in the normal Driver Mode the function of a connected 

client can be checked via KeepAlive signals in different modes. 

The serial port of a NetCom may 
mimic (emulate) a serial modem. 
This feature is available since 
Firmware version 

2.0 of the 

NetCom. There is the separate 
section 

8 below defining this 

 

Image 34: Web Panel IP-Modem 

823RM WLAN, 1623RM WLAN  

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