Comtrol NS-link Windows NT User Manual
Page 21
Initial NS-Link Installation
21
Windows XP: NS-Link Installation
its source code which makes the API calls that would force a port closure.
The included source code for FreePort demonstrates the calls an application
would make to perform the same operation.
26. Optionally, set the
TCP Timeout Multiplier
value.
Use the TCP
Multiplier to modify
two timers used in
TCP/IP socket
communications. The
first identifies how
long the TCP protocol
should wait before
timing out an attempt
to open a TCP
channel. This timer
defaults to 500 ms
when the TCP/IP
address method is
used to communicate
with a device. If the
TCP Multiplier is set
to 2, the timer would
now be 1000 ms, or 1
sec. If the multiplier is
4, the new timeout period would be 2000 ms, or 2 sec.
The second timer defines how long the driver will wait for a response from the
device when a forced release of a port is requested (i.e. as when the Freeport
utility is being used). This timer defaults to 8 seconds. If the TCP Multiplier is
changed to 2, the timer would now be 16 seconds. If the multiplier is 4, the
new timeout period would be 32 seconds.
27. Select the Ok button to close the Device window.