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- SKU: 06291
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NB124S 2-Channel Serial Server RS485/RS232/RS422 to Ethernet Converter
NB124S is a common industrial-grade 2-way serial port server that supports DC power supply. 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 light effects are used to feedback the different working states of the equipment.
Features
- Stable and reliable industrial design, high-level port protection
- Abundant LED status indicators to quickly locate the working status of the device
- Support Phoenix terminal or DC power supply, DC 8-28V wide voltage input, support reverse connection protection
- Support terminal interface (RS485/RS422) and standard DB9 interface (RS232)
- The baud rate supports 2400~115200bps, and supports multiple verification methods
- Support multiple registration packets and heartbeat packet sending, such as connection sending MAC, connection sending customization, etc.
- Supports stable and reliable host computer and AT command configuration, independent configuration of four channels does not affect each other
- Support DNS domain name resolution, domain name resolution server can be configured
- Support DHCP to dynamically obtain IP, subnet mask, default gateway, DNS server address
- Support multiple working modes TCP client, TCP server, UDP client, UDP server, MQTT client, HTTP client
- The 2-way server mode can be turned on at the same time, supporting 14 clients to dynamically allocate and access, and a single server supports 15 clients to access
- Support UDP server mode with memory mode, records the UDP address of the last communication, and uses it as the destination address of the next communication
- Support a variety of Modbus gateways, which can realize the active reporting of RTU devices, support the mutual conversion of Modbus TCP and Modbus RTU protocols, and can be configured as a storage mode to automatically collect device data, or use a multi-host mode with one question and one answer
- Support MQTT gateway function, fast access to Alibaba Cloud and standard MQTT3.1.1 servers (OneNET, Baidu Cloud, Huawei Cloud, etc.)
- Support Modbus data to actively report to TCP transparent transmission server, MQTT server and other servers
- Support HTTP client mode, use HTTP/1.1 protocol, can be configured as GET, POST two request methods
- Support TCP/IP direct communication or connect communication through "virtual serial port"
- Abundant independent LED status indicators, supporting links, network cables, data sending and receiving, etc.
- Support the host computer to perform firmware upgrade or firmware switch through UDP or serial port.
Specifications
- Interface signal: RS485/RS422/RS232
- Power supply: Crimp terminal & DC female head
- Network Port : RJ45
- Working Mode: TCP Server (default), TCP Client, UDP Server, UDP Client, HTTP Client, MQTT Client
- Network Protocol: TCPIP, UDP, MQTr, HITP, IPv4, ICMP, APR、DHCP, DNS
- IP acquisition method: DHCP, State IP (default)
- Serial baud rate: 2400 ~ 115200 bps (default 115200)
- Product size: 145 x 103x28mm (LxWxH)
- Working temperature and humidity: -40~ +85℃、5%~95%RH(no condensation)
- Storage temperature and humidity: -40~+105℃.5%~95%RH(no condensation)





Warranty Terms :
Branded products (Waveshare/ Raspberry Pi/ Radxa/ DWIN etc) are as per brand warranty terms. Generic products are eligible for replacement within 7 days of delivery based on following conditions.
Products are eligible for a replacement if there is physical damage during transit or a clear manufacturing defect. Any claim for damage/ wrong items/ replacement must be made within 48 hours of successful delivery of the product. Requests for refund of amount or exchange of product(s) will be reviewed on a case by case basis and HUBTRONICS carries final rights to take a final decision on refund, store credit or exchange.
What to take care of ?
Most of our products are technical in nature and require trained personnel to handle them. Any kind of mishandling can result in damage or malfunctioning of the product, it is not possible for us to provide a replacement or refund if the product is damaged due to technical or physical mishandling.
Who pays the return shipping cost?
Free of cost return pickup from delivery address is eligible for products categorized as manufacturing defect/ Damage in transit/ Wrong items delivered. We do not support return pickup for any B2B order or offline orders not placed on website. Buyer need to arrange return shipping for B2B orders.
What voids warranty?
Please note that replacement/ return or refund is not possible if the product is not compatible with your system/application. Please check all the technical details/ dimensions etc. before ordering and contact us for any kind of clarifications.
If product is soldered/ programmed at any point or physically altered in any way, it is not eligible for return/ replacement. If the item requires soldering for testing, please ensure that you use suitable clips or jig to test it without soldering. Any kind of soldering job makes the product ineligible for return or replacement.
Following items are not eligible for return under any circumstances
- Device Programmers / Dongles
- Soldering Consumables (Wire, Flux etc)



