User’s Manual of ICS-2x00T Serial Device Server Series
54
4.5.2.5 TCP Server mode
When the serial server is configured as a TCP server, it waits for a connection initiated by another network device. User must
set the local TCP port number for which it will listen for the connection, and the industrial serial server provides the maximum
number of two concurrent connections. Incidentally, industrial serial server can be configured as a client or server. The TCP
server mode topology in
Figure 4-5-115
appears.
Figure 4-5-15:
TCP Server Mode Topology
The TCP server mode screenshot in
Figure 4-5-16
appears.
Figure 4-5-16:
TCP Server Mode Screenshot
Object
Description
•
TCP Keep-alive
Interval
TCP keep alive interval shows how many seconds the unit waits during an inactive
connection before checking its status. If the unit does not receive a response, it will drop
that connection. The default is 0 minute.
•
Quiescent Time
When the network connection is determined to be idle, the duration of the control
network inactivity will cause the connection to be forcfully closed. The range of value is
from 1 to 65535 ms. The default is
0 ms
•
Max connection
This parameter set the TCP port number on which it will listen for the connection and set
the maximum (up to two) acceptable number of connections. The range of value is from
1 to 4. The default is
1
.
•
Local TCP port
This parameter describes the TCP port that communicates with the connected device.
The setting slave and master destination IP parameters must use the same value to
achieve communication. The range of value is from 1 to 65535. The default is
5004
for
port 1,
5005
for port 2,
5006
for port 3 and ,
5007
for port 4
•
Frame Length
This parameter can be used to control the data packet. When the device port is in the
buffer until the specified data is accumulated, the data will be packed and transmitted by
