figure4-8 The networking with broadcast method of serial device
The networking with broadcast type of serial device is a networking mode based on
UDP protocol.In the network,the host works in UDP broadcast mode,all devices works in
UDP unicast mode.this method creates a passive network essentially. The most typical
application is upgrading the wireless network for the traditional network based on the
connection of RS422/485 bus. If user would use this connection mode, all the devices and
their system control terminals in the original system needn’t to get any changes of software,
user directly replaces the original hardware connection of RS422/485 with this module, and
it can be truly "plug and play".