Usr TCP232-E - TCP Server Mode

Multifunctional serial to Ethernet module user manual www.tcp232.net
Jinan USR IOT Technology Co., Ltd freda@usr.so
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Diagram 7 Client 1 <-> server
Diagram 8 Client 2 <-> server
2.5.
2.5.
2.5.
2.5. TCP
TCP
TCP
TCP Server
Server
Server
Server mode
mode
mode
mode
TCP Server mode have 2 parameters: max link number and link type
1. max link number: 1 ~ 4;
2. Link type: typical, completely transparent, send data to all client;
extend1, communicate with id, otherwise abandon;
extend2, communicate with id, otherwise send to all client.
For link type extended 1 and extended 2:
When receive data from ethernet, module will send data to serial port with head ‘ I ’
‘ N ’ ,followed by data. ’ I ’ represent incoming data, ‘ N ’ represent client index.
When user MCU want send data to module serial port, start with head ‘ O ’ ‘ N ’ data... ‘ O ’
represent send out, ‘ N ’ represent which client.
When new TCP connection incoming, module will send ‘ C ’ ‘ N ’ ‘ M ’ to serial port, indicating
that there is current link ‘ N ’ accessed, total link number ‘ M ’ .
When link number have exceed maximum, new link requirment will lead to message ‘ F ’ ‘ F ’ .
When disconnect, module will send ‘ D ’ ‘ N ’ ‘ M ’ , represent current link N is delete, left link
M.
Note:
serial data need to be sent in one package to module.