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Command Summary
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Command Descriptions,
Continued
5. After you have selected the “hub_rom.mot” file and click on “OK,”
HyperTerm will begin transmitting records to the Hub. The Hub will
respond by periodically displaying addresses as the file downloads.
6. After approximately 5 minutes, the download will be complete. The
hub will display messages indicating that the download has com-
pleted, and it is erasing and programming the FLASH memory.
7. Finally, the Hub will reset, and display a new login prompt.
This command controls logging of hub software events. Software events
mark the progress of the Hub software in some detail so board problems
may be more easily analyzed. The
events off
command will stop the
logging of event messages. The
list
command, as described above, is
used to view the software events in the event buffer.
This command may be used to override default values for several pa-
rameters related to the HDLC protocol used by DataNET. Specific forms
of the command are:
dn setuptime
Displays the current “setup time” value,
in microseconds. This is the time that the
hub will transmit a “preamble” pattern on
a DataNET link before starting the actual
data frame. The preamble allows time for
the receiver circuitry at the far end of the
link to adjust to the incoming signal’s
amplitude, phase, and frequency. The
default setup time is 3500 microseconds.
dn setuptime
time
Sets the HDLC setup time to the value
given, in microseconds. The new setup
time value is saved in non-volatile mem-
ory.
“events” Command
“dn” Command
