Comtrol 500 DeviceMaster - Manual (Page 38)

38 - Socket Port Configuration DeviceMaster 500 User Guide: 2000501 Rev. A
Socket Port Configuration
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
DeviceMaster 500s 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
1 2 3 4
Serial Device
In this example, four
PCs receive data
simultaneously from one
serial device.
DeviceMaster
Serial RS-232 connections