Heartbeat Packet Function
USR-W610 supports network heartbeat packet and serial heartbeat packet. The network heartbeat packet notifies the server that it is in an active state, and it maintains the normal connection with the server by continuously sending the heartbeat packet.Serial port heartbeat packet notifies the serial device that USR-W610 is in an active state, and takes the initiative to grab the sensor data can not be initiative to push.

Socket Distribution Protocol
USR-W610 suppports SDP, you can add certain header in serial data. It will send the data to differetnt socket by different header. The data received from different
socket will be added different header before they are sent to serial.

Features:
1. The USR-W610 supports usrlink.
2. This serial adapter supports hardware reload.
3. The Support AP, STA, AP+STA.
4. The device servers supports RS232 or RS485 serial ports.
5. Support electrostatic protection.
6. Support identity packet function.
7. Support heartbeat packet function.
8. Support Websocket function.
9. Support timeout reset function, timing reset function.
10. Support Web Server, setup software, serial/network AT command to configure module.
11. Modbus Polling Mode: In this mode, USR-W610 supports Modbus TCP and Modbus RTU mutual conversion.

Work Mode
Transparent Transmission Mode
All transmitted/received data is not parsed between the serial port and the WiFi interface. It minimizes the complexity of user usage.

https Client Mode
Serial data will be submitted to the https server via https GET/POST/PUT requesting method.

AT Command Mode
User can query/set parameters via serial AT commands or network AT commands.