5 - Low-level Function Reference [UE9 Datasheet] | LabJack

# 5 - Low-level Function Reference [UE9 Datasheet]

## Low-level Function Reference Overview

This section describes the low-level functions of the UE9. These are commands sent over Ethernet or USB directly to the processors on the UE9. The Ethernet commands can all be sent using TCP, except for DiscoveryUDP. All commands, except stream related commands, can also be sent using UDP.

The majority of Windows users will use the high-level UD driver rather than these low-level functions.