User manual Version 1.1
SE5408/SE5416 Multi-port
Serial Server
Copyright © 2010 ATOP Technologies, Inc.
All rights reserved. Designed in Taiwan
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TCP Server: Link Mode Setting
TCP Server is the default Link mode. Being a server, it waits passively for connection requests from one
or more remote PC hosts. The maximum number of connected PC hosts is 4.
Normally, “Virtual Com Enable” box is not checked.
Max Connections (default=1):
This option is used if you need to receive data from different hosts simultaneously. When set to 1, only a
single host may open the TCP connection to the serial port. When set to 2 or greater, up to the specified
number of hosts may open this port at the same time.
ATTENTION
When
Max. Connections
is greater than 1, the Serial server device will apply multi connection application
(i.e., 4 hosts are allowed access to the port at the same time). When using a multi connection application,
all hosts connected to the port must use identical serial settings. If one of the hosts opens the COM port
with different serial settings, data will not be transmitted properly
Request and response Mode
This option determines how the port will proceed if multiple hosts are connected and one or more of the
hosts stop responding when the port is transmitting data. If you select
Reply to requester only
, the port
will keep other hosts’ request data in the buffer and continue data transmission to the request host only. If
you select
Reply to all
, the port will transmit reply data to all connected hosts
.
Transparent Mode
The port will allow the other hosts and continue data transmission to all hosts. This mode does not take
“Response Interval Timeout” into consideration.
If “IP Filter” is enabled, one must fill in the “Source IP” with the IP address of the PC host or client. For
instance, after you enable the “IP Filter”, and type in “10.0.55.200” in the Source IP field, then COM1 will
only accept requests from 10.0.55.200 (See Fig 20 below). In this case, only one, not four, connection
will be allowed to access COM1.
The “Local Port” is the logic listening port for establishing a network connection. The Local Port can be
reassigned if desired. The default Local Port of COM1 is 4660; COM2 is 4661; COM3 is 4662 and so on.
If you check “Apply to all serial ports”, it will configure all of the serial ports, following the same rule of
assigning a sequential logical port number. For example, if the Local Port of COM1 is 5000, then the Local
Port of COM2 is 5001, and that of COM3 is 5002, and so on.
Note: The “Virtual COM” box must be enabled only to assign the port to run in the Virtual COM mode.
Please go to Appendix A for detailed Virtual COM setup description.
