USR-TCP232-T2 User Manual h.usriot.com
Jinan USR IOT Technology Limited www.usriot.com
USR-TCP232-T2 User Manual................................................................................................................................ 1
1. Quick Start...............................................................................................................................................................4
1.1. Hardware Testing Environment................................................................................................................4
1.2. Connection...................................................................................................................................................4
1.3. Default Parameter...................................................................................................................................... 5
1.4. Data Transmission Testing........................................................................................................................5
2. Overview..................................................................................................................................................................6
2.1. Brief Introduction.........................................................................................................................................6
2.2. Features....................................................................................................................................................... 6
2.3. Parameters.................................................................................................................................................. 7
3. Hardware................................................................................................................................................................. 8
3.1. Hardware Information................................................................................................................................ 8
3.1.1. Pin Definition....................................................................................................................................8
3.1.2. Pin Dimension............................................................................................................................... 10
3.1.3. Evaluation Kit.................................................................................................................................10
3.2. Hardware Reference Design.................................................................................................................. 11
3.2.1. Typical Application Connection...................................................................................................11
3.2.2. Power Interface............................................................................................................................. 12
3.2.3. UART Interface..............................................................................................................................12
4. Module Function.................................................................................................................................................. 13
4.1 Work Model.................................................................................................................................................13
4.1.1. TCP Client Model..........................................................................................................................13
4.1.2. TCP Server Model........................................................................................................................ 14
4.1.3. UDP Client Model......................................................................................................................... 15
4.1.4. UDP Server Model........................................................................................................................16
4.1.5. HTTPD Client.................................................................................................................................17
4.1.6. TCP VS UDP................................................................................................................................. 17
4.2. DHCP and DNS Function....................................................................................................................... 18
4.3. VCOM.........................................................................................................................................................19
4.3.1. Module Works as Client...............................................................................................................19
4.3.2. Module Works as Server............................................................................................................. 20
4.3.3. Create VCOM................................................................................................................................ 21
4.4. Special Function....................................................................................................................................... 23
4.4.1. RS485 Function............................................................................................................................ 23
4.4.2. Link Function................................................................................................................................. 23
4.4.3. Factory Reset................................................................................................................................ 23
4.4.4. Reset Function.............................................................................................................................. 23
4.4.5. ID Function.....................................................................................................................................24
4.4.6. Index Function...............................................................................................................................24
4.4.7. Firmware Upgrade........................................................................................................................24
5. Parameter Setting................................................................................................................................................25
5.1. Webpage Setting...................................................................................................................................... 25
