USR-G809 User Manual
Technical Support:
Jinan USR IOT Technology Limited
www.pusr.com
58
7.3.2.MODBUS Mode
In this mode, USR-G809 can achieve bidirectional protocol conversion between serial MODBUS RTU data
and network MODBUS TCP data.
MODBUS mode supports 4 socket connections, which are independent with each other.
Socket A supports TCP client/server, socket B/C/D only supports TCP client.
7.3.3.HTTPD Mode
In this mode, user’s serial device can send request data to the HTTP server. USR-G809 will resolve the
server data then send to serial device. It will remove the HTTP header of the server data by default, users can
set whether to enable this function via AT commands.