Waveshare 2pcs/lot Industrial Modbus RS485 Serial Server, RS485 to RJ45 Ethernet, TCP/IP to Serial, Rail-Mount, POE function
SPECIFICATIONS
Battery Included: no
Baudrate: 300 ~ 115200 bps
Brand Name: cbhioarpd
Communication interface: RS485 port x 1, Ethernet port x 1
Communication method: TCP/IP direct communication, VCOM
Demo Board Type: ARM
Dimensions: L x W x H: 87 x 36 x 59 mm
High-concerned chemical: none
Model Number: RS485 TO ETH (B)
Operating temperature: -40℃ ~ 85℃
Origin: Mainland China
Power supply: 9 ~ 24V DC, screw terminal/ 9 ~ 24V DC screw terminal
Serial port: RS485/Isolated RS485
Storage temperature: -45℃ ~ 125℃
Typical Application Fields: Education and Learning
DESCRIPTION
This is an RS485 device data acquisitor / IoT gateway designed for the industrial environment. It combines multi functions in one, including serial server, Modbus gateway, MQTT gateway, RS485 to JSON, etc. The module features RS485 and Ethernet port(POE function is optional), uses screw terminals for power input. Rail-mount case design, small in size, easy to install. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring...
PRODUCT |
RS485 TO ETH (B) |
RS485 TO POE ETH (B) |
Product Type |
Serial server, Modbus Gateway, MQTT Gateway |
|
Basic Function |
Bi-directional transparent data transmission between RS485 and Ethernet |
|
Communication interface |
RS485 port x 1, Ethernet port x 1 |
|
Power supply |
9 ~ 24V DC screw terminal |
6 ~ 36V DC screw terminal, or PoE port |
Isolation Protection |
N/C |
Power isolation, Signal isolation |
COMMUNICATION |
||
Ethernet |
common network port |
PoE network port, support IEEE 802.3af standard |
10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection |
||
Serial port |
RS485 |
Isolated RS485 |
SERIAL SPECIFICATION |
||
Baudrate |
300 ~ 115200 bps |
|
Parity bit |
none, odd, even, mark, space |
|
Data bit |
5 ~ 9 bits |
|
Flow control |
N/A |
|
SOFTWARE |
||
Protocol |
ETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNS |
|
Configuration |
host, web browser, device management functions library |
|
Communication method |
TCP/IP direct communication, VCOM |
|
Operating mode |
TCP server, TCP client (coexisting with TCP server), UDP, UDP multicast |
|
ENVIRONMENT REQUIREMENT |
||
Operating temperature |
-40℃ ~ 85℃ |
|
Storage temperature |
-40℃ ~ 100℃ |
|
Humidity range |
5% ~ 95% relative humidity |
|
Dimensions |
L × W × H: 87 × 36 × 59 mm |
|
More Flexible Conversion Between Different Protocols
When used as MQTT gateway, the devices can upload serial data to MQTT server by MQTT protocol through transparent transmission, supported servers including Baidu Cloud MQTT, Alibaba Cloud MQTT, China Mobile OneNet, etc. The acquired Modbus RTU or non-standard serial data can be parsed into JSON format and packaged into MQTTdata packet for uploading.
When used as JSON data acquisition gateway, the devices can be connected to data acquisition instruments through RS485 connection, then acquire data automatically, convert the data into JSON format, and finally post it to server. The acquired data supports Modbus RTU 645 instrument 97 version, 645 instrument 07 version, as well as sorts of non-standard RS485 protocols. The uploaded data format can be configured via host, and the JSON upload protocol can be MQTT protocol, HTTP POST protocol, HTTP GET protocol, and so on.

Wiki: www.waveshare.com/wiki/RS485_TO_POE_ETH_(B)
ETHERNET |
|||||||||
RJ45 Ethernet |
10/100Mbps auto-negotiation |
||||||||
POE |
- |
supported |
- |
supported |
- |
supported |
- |
||
WIFI interface |
- |
802.11b/g/n 2.4GHz |
- |
||||||
UART |
|||||||||
Type |
RS485 |
RS232 |
RS232/485/422 |
RS485 |
RS232+RS485 (allows concurrent operation) |
||||
Baudrate |
600bps~230.4Kbps |
300bps ~ 115.2Kbps |
300bps ~ 460.8Kbps |
600bps~230.4Kbps |
|||||
Hardware flow |
NOT supported |
supported |
|||||||
Data bit |
5, 6, 7, 8 |
||||||||
Stop bit |
1, 2 |
||||||||
Parity bit |
None, Even, Odd, Space, Mark |
||||||||
INTERFACE PROTECTION |
|||||||||
Power supply |
reverse-proof, ESD protection, anti-surge |
||||||||
Ethernet |
1.5KV electromagnetic isolation |
||||||||
RS485 |
2KV ESD protection, 2.2KΩ pull up/down registers |
2KV anti-surge |
600W anti-surge, lightningproof, anti-electrostatic 15KV |
anti-surge, lightningproof, over-current protection |
2KV ESD protection, 2.2KΩ pull up/down registers |
||||
Other |
- |
- |
Power isolation, signal isolation protection |
- |
lightningproof, over-current protection |
||||
OPERATING MODE |
|||||||||
Type |
TCP Server, TCP Client, UDP Server, UDP Client, etc. |
||||||||
TCP Server |
customizable 1~16 Clients |
supports 30 Clients |
supports 24 Clients |
supports 2-ch Socket, 8 Clients per ch |
|||||
MISC |
|||||||||
Features |
customized heartbeat packets, customized registration packets, customized webpage, RFC2217-like protocol, KeepAlive, timeout auto reboot, short connection, firmware upgrade via network |
||||||||
- |
Modbus gateway, MQTT/JSON to Modbus |
Modbus gateway, MQTT, HTTP Client |
Modbus gateway, Websocket (webpage to serial) |
||||||
Configuration |
Built-in webpage, Host computer config software, Serial commands |
||||||||
Power supply |
5~7V |
9~24V |
6~36V |
5~36V |
|||||
Operating current |
110mA@5V |
15mA@12V |
39mA@12V |
20mA@12V |
40mA@12V |
127mA@5V |
86.5mA@5V |
||
Operating temp. |
-25~75℃ |
-40~85℃ |
|||||||
PACKAGE CONTENT
OPTIONS RS485 TO ETH Module x1
Weight: 0.077 kg
- Standard Shipping: Standard Shipping (12–18 Business Days)
- Express Shipping: Expedited Shipping (5–9 Business Days)
- Free Shipping: Orders over $199 qualify automatically
- Tracking: Full tracking number provided for all orders
- Returns: 30-day hassle-free return window
- Condition: Items must be unused and in original packaging
- Refund: Full refund processed within 3-5 business days
- Factory Direct: ISO/TS 16949 certified manufacturer
- Quality: 100% electrical continuity tested before shipment
- Experience: 15+ years in automotive connector industry
- Support: Professional technical support available
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