Contents
USR-IO424T-EWR User Manual ......................................................................................................................... 1
Features .................................................................................................................................................................... 4
1. Get Start ................................................................................................................................................................ 5
1.1. Product introduction ............................................................................................................................... 5
1.2. Basic parameters .................................................................................................................................... 5
1.3. Hardware .................................................................................................................................................. 6
1.3.1. Interface ........................................................................................................................................ 6
1.3.2. LED .................................................................................................................................................. 6
1.3.3. Dimension ..................................................................................................................................... 7
1.4. Test............................................................................................................................................................. 7
1.4.1. Control by serial ........................................................................................................................... 8
1.4.2. Web Server .................................................................................................................................. 10
1.4.3. Control by USR Cloud ................................................................................................................. 10
2. Product function ................................................................................................................................................ 11
2.1. DI input .................................................................................................................................................... 11
2.1.1. Electrical level detection ............................................................................................................. 11
2.1.2. Buttons detection ........................................................................................................................ 11
2.1.3. Pulse counting ............................................................................................................................ 12
2.2. DO output ................................................................................................................................................ 12
2.3. AI input ................................................................................................................................................... 12
2.4. Temperature detection ......................................................................................................................... 13
2.5. Analog self-calibration ......................................................................................................................... 13
2.6. Work mode ............................................................................................................................................. 13
2.6.1. Master mode................................................................................................................................ 13
2.6.2. Slave mode ................................................................................................................................... 15
2.7. Upgrade firmware ................................................................................................................................. 16
2.8. Network ................................................................................................................................................... 16
2.8.1. Ethernet interface ..................................................................................................................... 16
2.8.2. WiFi .............................................................................................................................................. 17
2.9. Serial port ............................................................................................................................................... 17
2.9.1. Basic parameters ....................................................................................................................... 17
2.9.2. Configuration method ............................................................................................................... 17
2.10. Features ................................................................................................................................................ 18
2.10.1. Relay output status hold .......................................................................................................... 18
2.10.2. Conditional control .................................................................................................................. 18
2.10.3. Connect to remote server....................................................................................................... 20
2.10.4. Reset to default by hardware................................................................................................. 21
3. Modbus ............................................................................................................................................................... 22
3.1. Modbus frame ........................................................................................................................................ 22
3.2. Register distribution ............................................................................................................................ 22
4. Contact Us ........................................................................................................................................................... 25
5. Disclaimer .......................................................................................................................................................... 26