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NE2-D11A RS485 to Ethernet Serial Server Modbus Gateway Supports TCP/UDP/MQTT/HTTP protocols
[Introduction]：NE2-D11A single serial port server is used to realize bidirectional transparent transmission of data from RS485 serial port to Ethernet port. It has multiple Modbus gateway modes and MQTTC/HTTPC IoT gateway modes, which can meet the networking functions of various serial port devices/PLCs; it adopts industrial-grade design standards to ensure equipment reliability. The serial port server realizes transparent transmission of serial port data to Ethernet TCP/IP data packets. Users do not need to care about the specific details, and the protocol conversion is completed inside the device.
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| serial number | name | Function | illustrate |
| 1 | POWER | Power indicator light (blue) | Steady on: power on; Steady off: power off |
| 2 | TXD | Serial port sending indicator light (red) | Flashing: The serial port outputs data to the customer device |
| 3 | RXD | Serial port receiving indicator light (green) | Flashing: The customer device outputs data to the NE2-D11 serial port |
| 4 | M0 | Link indicator (green) | Flashing: The network cable is connected normally but the link is not connected; On: The network link is connected successfully |
| 5 | M1 | Network negotiation indicator light (red and green) | Off: The network cable is not connected Green light: indicates 100M network; green light: data interaction at the physical layer Red light: indicates 10M network; red light: data interaction at the physical layer |
| 6 | RELOAD | Factory reset button | Press and hold for 5-10S. All indicators on the device will light up, indicating that the device has been restored to factory settings. |
| 7 | Ethernet | Network port | Standard RJ45 interface, 10/100M cross-direct connection adaptive |
| 8 | G | ground | signal ground |
| 9 | A/TXD | A/TXD | Connect to RS485-A or RS232-RXD |
| 10 | B/RXD | B/RXD | Connect to RS485-B or RS232-TXD |
| 11 | L | AC 85~265V input | 2P 5.08mm terminal block |
| 12 | N |