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© National Instruments Corporation
Why does the Device Manager report there is no driver installed for
remote serial ports?
This is normal for serial device server ports. Because
(Windows 2000 only)
the serial device server is installed separately, the Device Manager does not
display its information.
Why can't I configure remote serial ports directly from the Device
Manager?
(Windows 2000 only)
The remote serial ports are listed in the Device
Manager for informational purposes only. To change the configuration
information of a serial device server port, use the NI Ports integrated
control panel. For more information on NI Ports, refer to Chapter 4,
Port
Configuration.
I changed the hostname and/or IP address of my serial device server.
Why can I no longer communicate with my devices?
You must update the serial device server configuration information in
NI Ports.
1.
Select Start»Settings»Control Panel»NI Ports.
2.
Select the serial ports associated with the serial device server that you
reconfigured and click Delete.
3.
Add the serial ports back to your system using the updated hostname
and/or IP address. For more information, refer to the
Serial Interface
section in Chapter 4,
4.
Reboot your computer for the changes to take effect.
5.
Run the Serial Device Server Diagnostics utility as described in
Chapter 5,
Verify the
Why does the CreateFile API fail when I try to open a serial port that
is assigned COM12 on the serial device server?
The
function from the Microsoft Win32 API fails for port
CreateFile
names COM10 and higher. To use these ports successfully with this
function, append the string
using the C programming language to open COM12, use the following
string for the port name:
"\\\\.\\COM12"
Appendix C
Troubleshooting and Common Questions
Serial Port
Installation.
before the port name. For example, when
\\.\
C-11
ENET-232 and ENET-485 Series User Manual
Serial
Adding a New
Configuration.
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