User guide

Part 1 – AT Commands for All Universal IP Devices Chapter 6 – UDP Commands
Universal IP AT Commands Reference Guide (Document S000457H) 42
Chapter 6 – UDP Commands for All
Universal IP Devices
Set Commands
#UDPPORT – UDP Port Number
Description: If the UDP session is initiated in listen mode, use the local UDP port number.
If the UDP session is initiated in active mode, use the remote UDP port number.
Syntax: Set Value: AT#UDPPORT=<Port Number Value>
View Value: AT#UDPPORT?
Values: From 1 to 5 numeric digits (0 to 9).
Notes: Numbers above 65,535 are illegal as the port identification fields are 16-bits long in the IP
header. Port number 0 is illegal.
Default: 1234
#UDPSERV – UDP Server Address
Description: If the UDP session is initiated in listen mode, use the IP address filter. This means that the
remote must have a defined UDPSERV IP address. If the UDP session is initiated in active mode,
use the remote IP address.
Syntax: Set Value: AT#UDPSERV=<Value>
View Value: AT#UDPSERV?
Values: 32-bit number is dotted-decimal notation (i.e., xxx.xxx.xxx.xxx) or Alphanumeric ASCII text string
up to 120 characters if DNS is integrated. No default.
#UDPTXDELAY – Delay before Sending UDP Datagram
Description: This parameter determines the delay before sending an UDP datagram that has not been entirely
filled with user data. The delay is expressed in milliseconds. The 0 value initiates the sending an
UDP datagram as soon as possible after the reception of a single character value from the host.
Syntax: Set Value: AT#UDPTXDELAY=<Value>
View Value: AT#UDPTXDELAY?
Values: Integer, multiple of 20 and between 0 and 32760 inclusive.
Default Value: 100
#LUDPSTART – Initiate the UDP Session in Listen Mode
Description: Once an IP link is established, and if no other TCP/IP stack resource is active, this command sent
by the attached host directs the TCP/IP stack to initiate the UDP session in listen mode on the
specified UDP local port UDPPORT.
Syntax: Set Value: AT#LUDPSTART
Values: UDPPORT
UDPSESRV
UDPTXDELAY
No default