Page
51
February 2010
3.13.2 Serial Gateway
Serial Gateway functionality is available for both RS-232 and RS-485 ports independently, and
enables serial data to be routed via the wired or wireless network connection. Serial Gateway
functionality is similar to radio modem functionality, allowing point-to-point and multipoint serial
data transfer.
Each WI-MOD-E serial port may be configured as Server, Client, or Multicast Group. When
configured as Server, the module will wait for a connection to be initiated by a remote client. When
configured as Client, the module will automatically attempt to connect to the specified remote
server. When configured as Multicast Group, the module will broadcast data to all members of the
same Multicast Group.
Some of the possible Serial Gateway topologies are illustrated below. As can be seen, it is possible
for serial data from a WI-MOD-E to be transferred to one or more WI-MOD-E serial ports, or to be
encapsulated within a TCP/IP socket for availability on an Ethernet network. Conversely, data
encapsulated in a TCP/IP socket can be reproduced at a WI-MOD-E serial port. Both WI-MOD-E
serial ports and the hard wired Ethernet port can be in use at the same time.
