5. Getting TCP Ethernet Packets
TCP Ethernet packet data is transmitted over Port 4141. Code for the current M8 sensor
is Big Endian for transmitting multi-byte data in the more standard Network Byte Order.
Variable Definitions
The Ethernet packet data definitions vary depending on how the sensor is configured:
• For all three returns (as discussed in the "Multiple Returns" section, starting on
page 20), refer to the variable definitions for the packet formats provided in
Table 4 and Table 5.
• For a reduced number of returns (and reduced bandwidth), refer to the variable
definitions for the packet formats provided in Table 6 and Table 7.
You can configure the number of returns through the Sensor Settings Management
(web server) application as discussed in the "Managing the Sensor" section, specifically the
"Return Data Select" subsection starting on page 48.
M8 Sensor User Guide, QPN 96-00001 Rev K
Page 33