Specifications
50 - Socket Port Configuration DeviceMaster Installation and Configuration Guide: 2000506 Rev. B
SocketServer Architecture
SocketServer Architecture
TCP/IP socket mode operation is used to connect serial devices with an application that 
supports TCP/IP socket communications addressing.
Serial tunneling mode is used to establish a socket connection between two 
DeviceMasters through an ethernet network.
UDP mode is designed for applications that need faster data transmission, or that make 
use of UDP’s broadcast capabilities. UDP differs from TCP in that a UDP transmission does 
not first require a connection to be opened before sending data and the receiving device 
does not issue acknowledgements to the sender.
PC or 
Mainframe
LAN/WAN
Ethernet Hub
 DeviceMaster
 Serial Device
IP socket
application
Ethernet Hub
TCP/IP Socket Mode
DeviceMaster 
 DeviceMaster 
Ethernet Hub
Ethernet Hub
Dumb Terminal
Printer
Serial Tunneling Mode
LAN/WAN
UDP Mode
DeviceMaster 
Ethernet Hub
Ethernet Hub
LAN/WAN
1234
Serial Device
In this example, four
PCs receive data
simultaneously from one
serial device.
DeviceMaster 
Serial RS-232 connections










