Industrial serial server, RS232 to RJ45 Ethernet, TCP/IP to serial, rail-mount support, with POE function(optional)
RS485 to RJ45 Ethernet Module
Rail-mount RS485 serial server
Version Options
RS485 TO ETH (B)
Common Ethernet port (B)
9 ~ 24V power supply, without isolation protection
RS485 TO ETH (C)
Common Ethernet port (C)
6 ~ 36V power supply, with Electrical isolation
RS485 TO POE ETH (B)
PoE Ethernet port + Electrical isolation
The RS485 TO POE ETH (B) is the hardware upgrade version, supports PoE Ethernet port power supply, with power and signal isolation protection, which is safer for industrial applications. All three versions have the same software functionality.
Features At A Glance
This is a RS485 device data acquisitor / IoT gateway designed for 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…
Specifications
| Product | RS485 TO ETH (B) | RS485 TO ETH (C) | RS485 TO POE ETH (B) | RS232/485/422 TO ETH (B) | RS232/485/422 TO POE ETH (B) |
|---|---|---|---|---|---|
| Product Type | Serial server, Modbus Gateway, MQTT Gateway | ||||
| Basic Function | Bi-directional transparent data transmission between RS485 and Ethernet | Bi-directional transparent data transmission between RS232/485/422 and Ethernet | |||
| Communication interface | RS485 port x 1, Ethernet port x 1 | RS232 port x 1, RS485 port x 1, RS422 port x 1, Ethernet port x 1 | |||
| Power supply | 9 ~ 24V DC screw terminal | 6 ~ 36V DC screw terminal | 6 ~ 36V DC screw terminal, or PoE port | DC 5.5 power port, 6 ~ 36V DC screw terminal | DC 5.5 power port, 6 ~ 36V DC screw terminal, or PoE port |
| Isolation Protection | N/C | Power isolation, Signal isolation | |||
| Communication | |||||
| Ethernet | common network port | PoE network port, supports IEEE 802.3af standard | common network port | PoE network port, supports IEEE 802.3af standard | |
| 10 / 100M auto-negotiation RJ45 connector, 2 KV surge protection | |||||
| Serial port | RS485 | Isolated RS485 | Isolated RS232/485/422 | ||
| 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℃ | ||||
| Humidity range | 5% ~ 95% relative humidity | ||||
| Dimensions | L × W × H: 87 × 36 × 59 mm | L × W × H: 88.7 × 72.5 × 24.2 mm | |||
Primary function
Bi-directional transparent data transmission between RS485 and Ethernet
Rail-mount support
Easy to combine multi rail-mounted serial server together, more freely
Modbus gateway support
Suitable for Modbus gridding upgrade, can be used with 3D configuration software
Multi communication modes
Supports TCP server / TCP client / UDP mode / UDP multicast
MQTT/JSON to Modbus
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.
Multi hosts roll-polling support
Different network devices will be identified and responsed respectively,
No more crosstalk issue while communicating with multi network devices
User-defined heartbeat/registration packet
Easy for cloud communication and device identification
NTP protocol support
Getting network time info for serial output or data upload
Multi configuration methods
Supports Web browser configuration, obtaining dynamic IP via DHCP,
DNS protocol connected domain server address
Interface introduction
Outline dimensions
Selection guide
| Model | network port | Isolation Protection | Serial Port Type | Power Supply methods | Voltage Range | Dimensions (L × W × H) |
|---|---|---|---|---|---|---|
 RS485 TO ETH (B) |
Common network port | – | Single serial port server | Screw terminal | DC 9~24V | 87.0×36.0×59.0mm |
 RS485 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | Single serial port server | Screw terminal + PoE port | DC 6V~36V | 87.0×36.0×59.0mm |
 RS485 TO ETH (C) |
Common network port | Power isolation, Signal isolation | Single serial port server | Screw terminal | DC 6V~36V | 87.0×36.0×59.0mm |
 RS232 TO ETH (B) |
Common network port | Power isolation, Signal isolation | Single serial port server | Screw terminal | DC 6V~36V | 87.0×36.0×59.0mm |
 RS232 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | Single serial port server | Screw terminal + PoE port | DC 6V~36V | 87.0×36.0×59.0mm |
 RS232/485/422 TO ETH (B) |
Common network port | Power isolation, Signal isolation | RS232/485/422 choose one, single serial port server | Screw terminal + DC 5.5 power port | DC 6V~36V | 88.7×72.5×24.2mm |
 RS232/485/422 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | RS232/485/422 choose one, single serial port server | Screw terminal + PoE port + DC 5.5 power port | DC 6V~36V | 88.7×72.5×24.2mm |
 2-CH RS485 TO ETH (B) |
Common network port | Power isolation, Signal isolation | Dual serial ports server | Screw terminal + DC 5.5 power port | DC 6V~40V | 78.0×72.5×24.2mm |
 2-CH RS485 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | Dual serial ports server | Screw terminal + PoE port + DC 5.5 power port | DC 6V~40V | 78.0×72.5×24.2mm |
 RS232 RS485 TO ETH (B) |
Common network port | Power isolation, Signal isolation | Dual serial ports server | Screw terminal + DC 5.5 power port | DC 6V~40V | 78.0×72.5×24.2mm |
 RS232 RS485 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | Dual serial ports server | Screw terminal + PoE port + DC 5.5 power port | DC 6V~40V | 78.0×72.5×24.2mm |
 4-CH RS485 TO ETH (B) |
Common network port | Power isolation, Signal isolation | 4 serial ports server | Screw terminal | DC 6V~40V | 91.0×64.5×24.2mm |
 4-CH RS485 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | 4 serial ports server | Screw terminal + PoE port | DC 6V~40V | 91.0×64.5×24.2mm |
 8-CH RS485 TO ETH (B) |
Common network port | Power isolation, Signal isolation | 8 serial ports server | Screw terminal | DC 7V~36V | 93×103.5×29.7mm |
 8-CH RS485 TO POE ETH (B) |
PoE network port | Power isolation, Signal isolation | 8 serial ports server | Screw terminal + PoE port | DC 7V~36V | 93×103.5×29.7mm |
