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Chapter 7: ESP-Install Program 63
For example, in the preceding ESP-2 hub example, physical port 1 was mapped to logical port
COM30 and physical port 2 was mapped to logical port COM40. The specified logical (COM) port
number must be in the range 0-255 and it must be unique; only one physical port may be assigned
to a particular logical (COM) port number.
COM30 and physical port 2 was mapped to logical port COM40. The specified logical (COM) port
number must be in the range 0-255 and it must be unique; only one physical port may be assigned
to a particular logical (COM) port number.
The current mapping may be obtained from the Windows Device Manager on the ESP property
page and the Starting COM Port listboxes. A current list may also be generated by
entering
page and the Starting COM Port listboxes. A current list may also be generated by
entering
espinstall /list
.
You may remap logical port numbers at any time, as long as they do not conflict with any
existing mappings.
existing mappings.
Updating ESP Hub Configurations
You may use the ESP-Install program to update the information used by drivers for an ESP
serial hub.
serial hub.
Update information for each hub is also specified within an ESP-END block. The first command is
ESP. The IP and Type commands are required to identify the serial hub to update.
ESP. The IP and Type commands are required to identify the serial hub to update.
NOTE: If you wish to change a hub’s IP address, the hub must first be initialized with no IP address.
Enter additional commands as needed to modify/update the configuration. The last command for
each hub’s block must be END.
each hub’s block must be END.
Changes take effect immediately; you do not need to reboot the hub.
Removing ESP Hubs
You may use the Remove command to uninstall/remove a previously installed ESP serial hub. The
Remove command specifies the IP address of the hub to be removed. This command is issued
outside of an ESP-END command block, but it may be included in a script file that also contains
ESP-END command blocks that install/update hubs.
Remove command specifies the IP address of the hub to be removed. This command is issued
outside of an ESP-END command block, but it may be included in a script file that also contains
ESP-END command blocks that install/update hubs.
To update a driver without having to reboot the computer, you may remove information about all
previously installed ESP hubs and then put it back, all in the same script file. This will also load a
new esp.sys driver in the computer’s memory. This provides an easy way to update a driver without
having to reboot the computer when more than one ESP hub is installed.
previously installed ESP hubs and then put it back, all in the same script file. This will also load a
new esp.sys driver in the computer’s memory. This provides an easy way to update a driver without
having to reboot the computer when more than one ESP hub is installed.
To remove and replace existing information:
1.
Run espinstall /list to obtain a list of currently installed hubs.
2.
Edit your original script file, adding a Remove command at the beginning of the file for each
installed ESP hub.
installed ESP hub.
3.
Run espinstall /text <filename> on the edited file.