USR-DR13X User Manual
Figure 48. Settings of index function
When the TCP connection is established, the serial will out put the connection order showing in the red
rectangle. And when the clients send data to serial device, the DR13X will prefixes the data with a serial
number like I1, I2.
When the serial device needs to send data to a specific client, such as sending data to the first client, you can
add O1 in front of the data, such as we send O1www.usr.cn meaning sending www.pusr.com to the first clients.
We can see the result in the following picture, the data is send to the first client only as indicated by the blue
arrow.
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