User manual
IEC61131 User and Reference Manual 
April 22, 2008     
124 
Modbus ASCII in UDP 
The Modbus ASCII in UDP property page is selected for editing by clicking Modbus ASCII in 
UDP in the tree control section of the IP Configuration dialog. When selected the Modbus 
ASCII in UDP property page is active. 
The Server selection selects whether the server is enabled. If this option is enabled the 
controller supports incoming slave messages. Disabling this option prevents the controller 
from processing slave messages. Master messaging is always enabled. 
The UDP Port sets the port used by the protocol. Valid port number range is 1 to 65534. The 
default value is 49153. This is a recommendation only. Consult your network administrator to 
obtain a port if you are not using the default. 










