Ebyte NB144S Modbus RTU to TCP gateway rs485/232/422 to Ethernet network port module industrial-grade
[Interface signal]：RS485/RS422/RS232
[Baud rate]：2400~115200bps (default 115200)
[Product size]：198x109x26.5mm (LxWxH)
[Installation method]：positioning hole installation
[Product weight]：530g±5g
[Introduction]：NB144S is a 4-way serial port server which supports POE power supply.The shell adopts three-proof coating, which is Anti-Fungal, Anti-Humidity,and Anti-Salt Spray.It integrates TCP/IP protocol stack inside and can realize two-way transparent data transmission from 4-way serial port to Ethernet port . The device has ModBus gateway function, supports Modbus TCP to RTU, and supports auto polling.
Note: The Phoenix head terminal cannot supply power with the DC plug at the same time.
| serial number | name | Function | illustrate |
| 1 | RS232-4 | Serial port 4 -RS232 interface | Standard DB9 female, 2 -TXD , 3 -RXD , 5- GND |
| 2 | RS232-3 | Serial port 3 -RS232 interface | Standard DB9 female, 2 -TXD , 3 -RXD , 5- GND |
| 3 | RS232-2 | Serial port 2 -RS232 interface | Standard DB9 female, 2 -TXD , 3 -RXD , 5- GND |
| 4 | RS232-1 | Serial port 1 -RS232 interface | Standard DB9 female, 2 -TXD , 3 -RXD , 5- GND |
| 5 | RS422-1-R+ | Serial port 1-RS422 interface-R+ | 3.81mm Phoenix termina |
| 6 | RS422-1-R- | Serial port 1-RS422 interface-R- | 3.81mm Phoenix termina |
| 7 | GND | Serial port 1 ground terminal | 3.81mm Phoenix termina |
| 8 | RS422-1-TH/A | Serial port 1-RS422 interface-T+ Serial port 1-RS485 interface | 3.81mm Phoenix termina |
| 9 | RS422-1-T/B | Serial port 1-RS422 interface-T- Serial port 1-RS485 interface | 3.81mm Phoenix termina |
| 10 | GND | Serial port 1 ground terminal | 3.81mm Phoenix termina |
| 11 | RS422-2-R+ | Serial port 2-RS422 interface-R+ | 3.81mm Phoenix termina |
| 12 | RS422-2-R- | Serial port 2-RS422 interface-R- | 3.81mm Phoenix termina |
| 13 | GND | Serial port 2 ground terminal | 3.81mm Phoenix termina |
| 14 | RS422-2-T+/A | Serial port 2-RS422 interface-T+ Serial port 2-RS485 interface A | 3.81mm Phoenix termina |
| 15 | RS422-2-T/B | Serial port 2-RS422 interface-T- Serial port 2-RS485 interface B | 3.81mm Phoenix termina |
| 16 | GND | Serial port 2 ground terminal | 3.81mm Phoenix termina |
| 17 | RS422-3-R+ | Serial port 3-RS422 interface-R+ | 3.81mm Phoenix termina |
| 18 | RS422-3-R- | Serial port 3-RS422 interface-R- | 3.81mm Phoenix termina |
| 19 | GND | Serial port 2 ground terminal | 3.81mm Phoenix termina |
| 20 | RS422-3-T+/A | Serial port 3-RS422 interface-T+ Serial port 3-RS485 interface A | 3.81mm Phoenix termina |
| 21 | RS422-3-T-/B | Serial port 3-RS422 interface-T- Serial port 3-RS485 interface B | 3.81mm Phoenix termina |
| 22 | GND | Serial port 3 ground terminal | 3.81mm Phoenix termina |
| 23 | RS422-4-R+ | Serial port 4-RS422 interface-R+ | 3.81mm Phoenix termina |
| 24 | RS422-4-R- | Serial port 4-RS422 interface-R- | 3.81mm Phoenix termina |
| 25 | GND | Serial port 4 ground terminal | 3.81mm Phoenix termina |
| 26 | RS422-4-T+/A | Serial port 4-RS422 interface-T+ Serial port 4-RS485 interface A | 3.81mm Phoenix termina |
| 27 | RS422-4-T-/B | Serial port 4-RS422 interface-T- Serial port 4-RS485 interface B | 3.81mm Phoenix termina |
| 28 | GND | Serial port 2 ground terminal | 3.81mm Phoenix termina |
| 29 | - | Negative pole of DC 8-28 V | DC 8 -28 V , 5.08 mm Phoenix termina |
| 30 | + | Positive pole of DC 8-28 V | DC 8 -28 V , 5.08 mm Phoenix termina |
| 31 | DC-IN | DC power input | DC 8-28V ; Outer diameter 5.5mm , inner diameter 2.0 mm in-line round hole |
| 32 | Ethermet | Ethernet interface | Standard R J45 Ethernet interfa |
| 33 | Reload | factory reset button | After long pressing for 5s, N ET is always on for 5s, and the device is restored to factor |