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NA111-M RS485 to Ethernet Serial Server TCP/UDP Four communication mechanisms Support Modbus gateway mode and MQTT/HTTP IoT gateway mode
[Introduction]：NA111-M is a serial port server that realizes serial port data ⇌ Ethernet data conversion; it has multiple Modbus gateway modes and MQTT/HTTP 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 product has a built-in RJ45 interface, and the RS485 port uses a 3×2.54mm plug-in Phoenix head spring terminal. The product can be installed using a guide rail or a positioning hole.
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| serial number | name | Function | illustrate |
| 1 | POWER | Power indicator light (blue) | Always on: power on; Always off: power is disconnected; |
| 2 | LINK | Connection indicator light (yellow) | Steady on: Connection to server successful or UDP mode Off: The network is disconnected |
| 3 | TXD | Serial port sending indicator light (green) | Flashing: The serial port outputs data to the customer device Always off: no data interaction |
| 4 | RXD | Serial port receiving indicator light (yellow) | Flashing: The customer device outputs data to the NE2-D11 serial port Always off: no data interaction |
| 5 | Reload | Factory reset button | Press and hold until the LINK, M0, and M1 indicators light up and then release to restore the factory settings successfully. |
| 6 | G | GND | Connect RS485 cable shield or RS232-G |
| 7 | A | 485-A | Connect RS485-A interface |
| 8 | B | 485-B | Connect RS485-B interface |
| 9 | - | power supply- | Connect 8~28v power supply V- |
| 10 | + | Power+ | Connect 8~28v power supply V+ |
| 11 | Ethernet | Network port | Standard RJ45 interface, 10M network port |