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W&T Expanded services of the Com-Server
25�3 Com-Server reset
Factory default: 8888/TCP
The reset socket has been implemented in case the Com-
Server ever needs to be completely reset. If a connection is
opened on this port, the Com-Server immediately closes it
again and then performs a software reset.
1
The factory default port number under which this
service can be reached is configured and deactivated
in the menu branch SETUP System r Setup TCP/IP r System
Port List
Use of the system password
If a system password has been configured (see section „Basic
Configuration of the Com-Server“), this must be null-termi-
nated (=[password] + 0x00) and sent to the Com-Server via
the Control Port within 2s after a connection has been suc-
cessfully opened. If the Com-Server does not receive a correct
or even any password within this time, it sends the message
PASSWD? followed by a null byte (0x00) to the client and clo-
ses the TCP connection.
If no system password is configured, then as the example
shows the Com-Server immediately closes the TCP connection
as soon as it has been established and performs a port reset.
1
Following this reset all the buffer contents are
deleted and any still active connections are closed - the
Com-Server is in its base state! This reset can be performed
from any station and should be done only in extreme cases.
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