UDP is a connectionless transport protocol designed to operate over IP. Typical applications in Industrial Control includes fast data transfer from cameras and cyclic “Process Data” from PLCs.

UDP does not guarantee the delivery of packets but guarantees that if a packet is ever delivered in error, then such error will be detected by the receiver.

In Trio, implementation of UDP is used for the transport of ASCII and Binary data bytes between devices in a manner similar to the use of a serial port. A user application program can send and receive strings of data using the same BASIC commands that apply to serial communications.