Bm options, Timeouts, Miscellaneous options – B&B Electronics USR604 - Manual User Manual
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Section 6 - Advanced User Settings
Page 28 of 45
Document Number: USR60x-0812m
Select lower settings to correct performance problems at low baud
rates. Select higher settings for faster performance.
BM Options
The BM Options dropdown list provides a setting for the Latency Timer.
The latency timer is a form of time-out mechanism that counts from
the last time data was sent from the USR60x back to the PC. If the
latency timer expires, the USR60x will send any data it has available to
the PC. It then resets and begins counting again.
Timer settings from 1 to 255 msecs are available. The default value is
16 msec.
Select lower settings to correct response problems.
Timeouts
The USB timeout is the maximum time in milliseconds that a USB
request can remain outstanding. Minimum read and write timeout
values between 0 and 10000 msec can be selected.
The default values are 0 for both read and write timeouts.
Miscellaneous Options
The following settings can be selected or deselected by clicking the
appropriate checkbox:
Serial Enumerator - The function of the serial enumerator is to detect
a Plug-and-Play enabled device (such as a serial mouse or serial
modem) that is attached to the USB serial port.
Serial Printer - If enabled, serial printer will disable timeouts to allow
for long delays associated with paper loading.
Cancel If Power Off - The Cancel If Power Off option can be used to
assist with problems encountered when going into a hibernate or
suspend condition. This will cancel any requests received by the driver
when going into hibernate or suspend.