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Ebyte NB124 industrial serial server Four-serial device server RS232/422/485 to Ethernet serial port Modbus gateway IoT module
[Introduction]：NB124 is an industrial-grade 2-way serial port server that supports DC power supply isolation. It integrates the TCP/IP protocol stack inside, which can realize two-way transparent transmission of data from the 2-way serial port to the Ethernet port. The device has the function of ModBus gateway, supports Modbus TCP to RTU, and supports automatic polling. The product adopts industrial-grade standard design to ensure the stability of the equipment in harsh working environments, and the rich indicator lights are used to feedback the different working states of the equipment.
| No. | Name | Function | Description |
| 1 | RS232-2 | Serial port 2-RS232 | Standard DB9 female head，2-TXD、3-RXD、5-GND |
| 2 | RS232-1 | Serial port 1-RS232 | Standard DB9 female head，2-TXD、3-RXD、5-GND |
| 3 | RS422-1-R+ | Serial port 1-RS422 -R+ | 3.81mm Phoenix terminal |
| 4 | RS422-1-R- | Serial port 1-RS422 -R- | 3.81mm Phoenix terminal |
| 5 | GND | Serial port 1 Ground | 3.81mm Phoenix terminal |
| 6 | RS422-1-T+/A | Serial port 1-RS422 -T+ Serial port 1-RS485 A | 3.81mm Phoenix terminal |
| 7 | RS422-1-T-B | Serial port 1-RS422 -T- Serial port 1-RS485 B | 3.81mm Phoenix terminal |
| 8 | RS422-2-R+ | Serial port 2-RS422 -R+ | 3.81mm Phoenix terminal |
| 9 | RS422-2-R- | Serial port 2-RS422 -R- | 3.81mm Phoenix terminal |
| 10 | GND | Seria2 port 1 Ground | 3.81mm Phoenix terminal |
| 11 | RS422-2-T+/A | Serial port 2-RS422 -T+ Serial port 2-RS485 A | 3.81mm Phoenix terminal |
| 12 | RS422-2-T-/B | Serial port 2-RS422 -T- Serial port 2-RS485 B | 3.81mm Phoenix terminal |
| 13 | - | DC 8-28 V Negative pole | DC 8-28 V，5.08mm Phoenix terminal； |
| 14 | + | DC 8-28 V Positive pol | DC 8-28 V，5.08mm Phoenix terminal； |
| 15 | DC-IN | DC power input | DC 8-28 V； OD 5.5mm，ID 2.0mm straight plug-in round hole； |
| 16 | Ethernet | Ethernet interface | Standard RJ45 Ethernet interface |
| 17 | Reload | factory reset button | After long pressing for 5s, NET led is always on for 5s, and the device restores to factory settings |