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E810-U41 USB to RS485 serial port to RS232 converter Industrial grade TTL conversion module communication adapter photoelectric isolation RS422 high protection protection industrial lightning protection 3M high speed
[Introduction]：E810-U41 is an industrial-grade USB to 4-way RS485 conversion module. With an external USB interface, 4 independent RS485 interfaces can be converted without affecting each other. It is suitable for scenarios where the computer is connected to multiple RS485 networks at the same time. Built-in RS485 automatic transceiver switching circuit, independent pin control switching, makes RS485 communication more reliable, and can connect more devices at the same time.
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| serial number | name | Function | illustrate |
| 1 | A1 | RS485-1 A port | 5.08mm Phoenix head terminal, connected to the A interface of the communication partner |
| 2 | B1 | RS485-1 B port | 5.08mm Phoenix head terminal, connected to the B interface of the communication partner |
| 3 | GND | Digital signal ground interface | 5.08mm Phoenix head terminal, connected to the GND interface of the communication partner |
| 4 | A2 | RS485-2 A port | 5.08mm Fenghuang head terminal, connect to the A interface of the communication partner |
| 5 | B2 | RS485-2 B port | 5.08mm Phoenix head terminal, connected to the B interface of the communication partner |
| 6 | A3 | RS485-3 A port | 5.08mm Phoenix head terminal, connected to the A interface of the communication partner |
| 7 | B3 | RS485-3 B port | 5.08mm Phoenix head terminal, connected to the B interface of the communication partner |
| 8 | GND | Digital signal ground interface | 5.08mm Phoenix head terminal, connected to the GND interface of the communication partner |
| 9 | A4 | RS485-4A port | 5.08mm Phoenix head terminal, connected to the A interface of the communication partner |
| 10 | B4 | RS485-4 B port | 5.08mm Fenghuang head terminal, connect to the B interface of the communication partner |
| 11 | USB | USB interface | type-c interface, USB2.0 |
| 12 | LED-PWR | Power indicator light | Power on: solid red Power off: light goes out |
| 13 | LED-TX1 | Channel 1 data sending indicator light | Data interaction: yellow light flashes No data interaction: off |
| 14 | LED-RXD1 | Channel 1 data receiving indicator light | Data interaction: yellow light flashes No data interaction: off |
| 15 | LED-TX2 | Channel 2 data sending indicator light | Data interaction: yellow light flashes No data interaction: off |
| 16 | LED-RXD2 | Channel 2 data receiving indicator light | Data interaction: yellow light flashes No data interaction: off |
| 17 | LED-TX3 | Channel 3 data sending indicator light | Data interaction: yellow light flashes No data interaction: off |
| 18 | LED-RXD3 | Channel 3 data receiving indicator light | Data interaction: yellow light flashes No data interaction: off |
| 19 | LED-TX4 | Channel 4 data sending indicator light | Data interaction: yellow light flashes No data interaction: off |
| 20 | LED-RXD4 | Channel 4 data receiving indicator light | Data interaction: yellow light flashes No data interaction: off |