25
ICC
Database Endianness Selection
Select the desired endianness for how data will be stored in the device’s internal
database for multi-byte data types. For more information on database
endianness, refer to Appendix A: Database Endianness.
8.2.2
USB Virtual COM Port Settings
The device can be configured to enumerate as a USB virtual COM port, providing
direct serial communications between the device and a PC through the USB
connection. The COM port can be used for various tasks, depending on the
selected mode. This section details the different functions of the virtual COM
port.
Mode
Select the desired mode for how the USB virtual COM port will be used. The
available options are detailed below.
Serial Pass-Through
Select this option to cause the device to behave as a USB-to-serial
converter. Any data sent to the USB virtual COM port will be forwarded
to the physical serial port and any data received by the physical serial
port will be forwarded to the USB virtual COM port. Note that while the
device is in this mode all other functionality of the device is disabled,
regardless of other configuration settings.
Serial Redirect
Select this option to redirect communications from the selected serial
port on the device to the USB virtual COM port. By selecting this option,
the device will communicate with the PC over the virtual COM port using
the settings configured on the associated serial port. This allows the
device to communicate with the PC using any of the supported serial
port protocols. Note that the physical serial port is disabled when the
device is configured in this mode.
Serial Sniffer
Select this option to sniff the received and transmitted packets on the
selected serial port and output the data to the virtual COM port. When
this mode is selected, the device will attempt to output every packet that
the protocol driver configured on the serial port receives and transmits.
Because the sniffer operates independently from the physical serial port
(so as not to impact communications), there may be times when the
sniffer cannot output a received or transmitted packet due to the USB
connection being unable to process characters faster than they are
exchanged on the physical serial port. When this occurs, the sniffer will
output the characters "ERR: Sniffer Packet Overflow" or "ERR: Sniffer
Buffer Overflow". Additionally, the sniffer is able to detect receive errors
on the serial port such as parity, overrun, and framing errors. If a