S erial to Ethernet module USR-TCP232-T24 series http://en.usr.cn
Jinan USR IOT Technology Limited Page 36 of 53 tec@usr.cn
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3.65 Index
Index
Index
Index
Module as TCP SERVER end up at the same time to establish four connections, server-side at the same
time send data to four CLIENT and SERVER the receiving Client-side data can not distinguish between
sources of data, the Index function can send and receive data source selection.
Index function is enabled, communication data is displayed corresponding Client side device number,
specific parameters are described below :
1.When receive data from ethernet, module will send data to serial port with head 49 N ,followed by data.
49 represent incoming data, N represent client index.
2.When user MCU want send data to module serial port, start with head 4F N data... 4F represent send
out, N represent which client.
3.When new TCP connection incoming, module will send 43 N M to serial port, indicating that there is
current link N accessed, total link number M.
4.When link number have exceed maximum, new link requir e ment will lead to message 46 46.
5.When disconnect, module will send 44 N M, represent current link N is delete, left link M.
Note:
Note:
Note:
Note: The above values set are HEX format
Set the software interface :
Data transmission as shown below:
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3.66 RFC2217
RFC2217
RFC2217
RFC2217
RFC2217 is an agreement for setup com port settings via Ethernet by socket, Our product support an
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