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DESCRIPTION 4-Ch RS485 To RJ45 Ethernet Serial Server, 4 Channels RS485 Independent Operation, Rail-Mount Industrial Isolated Serial Module, Bi-Directional Transparent Transmission, Modbus Gateway, Optional PoE FunctionIndustrial Isolated 4-Ch RS485 To RJ45 Ethernet Serial Server4-Ch RS485 to Ethernet, Modbus/MQTT/JSON Support, Rail-mount Metal Case Features At A GlanceThis is a multi-functional device data acquisitor / IoT gateway with 4-ch RS485 and an Ethernet port (PoE version optional), small in size, easy to install, and cost-effective. It is suitable for applications like data acquisition, IoT gateway, safety & security IoT, and intelligent instrument monitoring, meeting various application scenarios.4-ch RS485 can work independently without affecting each other at the same time, enabling more effective data transmissionCombines multiple functions in one, including serial server, Modbus gateway, MQTT gateway, and RS485 to JSON, etc.Adopts screw terminal for stable power inputWall-mount and rail-mount case design, easy to install, for quick deployment and expansionVersion Options4-CH RS485 TO ETH (B)4-ch RS485 + Common network port + Electrical isolation 4-CH RS485 TO POE ETH (B)4-ch RS485 + PoE network port + Electrical isolationSpecifications4-CH RS485 TO ETH (B)4-CH RS485 TO POE ETH (B)4-Ch RS485 + Common network port + Electrical isolation4-Ch RS485 + PoE network port + Electrical isolationProduct TypeSerial server, Modbus Gateway, MQTT GatewayBasic FunctionBi-directional transparent data transmission between RS485 and EthernetCommunication interfaceRS485 port × 4, Ethernet port × 1Power supplyDC 6 ~ 45V screw terminalDC 6 ~ 45V screw terminal, or PoE portIsolation ProtectionPower isolation, Signal isolationCOMMUNICATIONEthernetRJ45RJ45 with PoE support, IEEE 802.3af compliant10 / 100M auto-negotiation RJ45 connector, 2 KV surge protectionSerial portIsolated RS485 (the 4 channels can receive and transmit independently at the same time)SERIAL SPECIFICATIONBaudrate300 ~ 115200 bpsParity bitnone, odd, even, mark, spaceData bit5 ~ 9 bitsFlow controlN/ASOFTWAREProtocolETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNSConfigurationhost, web browser, device management functions libraryCommunication methodTCP/IP direct communication, VCOMOperating modeTCP server, TCP client (coexisting with TCP server), UDP, UDP multicastOTHERSOperating temperature-40℃ ~ 85℃Humidity range5% ~ 95% relative humidityDimensionsL × W × H: 91.0 × 64.5 × 24.2 mmPrimary FunctionBi-Directional Transparent Data Transmission Between 4-Ch RS485 And EthernetMulti Power Supply OptionsSupport PoE Ethernet Port Power Supply*, Suitable For IEEE 802.3af PoE StandardSupport Screw Terminal For Power Supply, DC 6~45V Wide Voltage Range Input* This function is only available on the PoE versionIndustrial Serial ServerIndustrial Rail-Mount Design, Support Wall-Mount And Rail-Mount Installation, Compact Size, Easy Installation, Cost-EffectiveModbus Gateway SupportSuitable For Modbus Networking Upgrade, Can Be Used With Specific Configuration SoftwareMulti Communication ModesSupports TCP Server / TCP Client / UDP Multicast / UDP Mode * Note: This module is 4-channel, and each channel supports the above functions separatelyMQTT/JSON To ModbusMore Flexible Conversion Between Different ProtocolsWhen 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 MQTT data 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 SupportDifferent Network Devices Will Be Identified And Responsed Respectively,No More Crosstalk Issue While Communicating With Multi Network DevicesUser-Defined Heartbeat/Registration PacketEasy For Cloud Communication And Device IdentificationNTP Protocol SupportGetting Network Time Info For Serial Output Or Data UploadMulti Configuration MethodsSupports Web Browser Configuration, Obtaining Dynamic IP Via DHCP,DNS Protocol Connected Domain Server AddressMultiple Protection, Safe And StableOnboard power supply and signal isolation, it can provide stable isolation voltage with high reliability and strong anti-interference. Built-in TVS (transient voltage suppression tube) can effectively suppress the surge voltage and transient peak voltage in the circuit, lightningproof & ESD protection. Built-in resettable fuse and protection diode to ensure stable output of current and voltage, prevents over-current and over-voltage proof, improve shock proof performanceAluminium Alloy EnclosureAluminium Alloy Enclosure With Sand Blasting And Anodic OxidationSolid And Durable, Fashion And Good Hand FeelingInterface IntroductionProduct Show* for reference only, please refer to the Package Content for detailed part listOutline DimensionsSupport Batch CustomizationSupport Software And Hardware CustomizationIncluding Hardware Interface, LOGO, Label, Case And Web Page, Etc. PACKAGE CONTENT Weight: 0.023 kg4-CH RS485 TO ETH (B)4-CH RS485 TO ETH (B) x1Rail-mount buckle x1Screwdriver x1Screws pack x14-CH RS485 TO POE ETH (B)4-CH RS485 TO POE ETH (B) x1Rail-mount buckle x1Screwdriver x1Screws pack x1 Resources & ServicesSelection Guide RS485 TO ETH (B)RS485 TO POE ETH (B)RS232/485/422 TO ETH (B)RS232/485/422 TO POE ETH (B)2-CH RS485 TO ETH (B)2-CH RS485 TO POE ETH (B)RS232 RS485 TO ETH (B)RS232 RS485 TO POE ETH (B)4-CH RS485 TO ETH (B)4-CH RS485 TO POE ETH (B)DescriptionCommon network portPoE network port + Electrical isolationMulti interfaces + common network port + Electrical isolationMulti interfaces + PoE network port + Electrical isolation2-Ch RS485 + Common network port + Electrical isolation2-Ch RS485 + PoE network port + Electrical isolationRS232 + RS485 + Common network port + Electrical isolationRS232 + RS485 + PoE network port + Electrical isolation4-Ch RS485 + Common network port + Electrical isolation4-Ch RS485 + PoE network port + Electrical isolationProduct TypeSerial server, Modbus Gateway, MQTT GatewaySerial Port TypeSingle serial port serverRS232/485/422 choose one, single serial port serverDual serial ports server4 serial ports serverPower Supply methodsScrew terminal-PoE port-PoE port-PoE port-PoE port-PoE port-DC 5.5 power port-Voltage RangeDC 9~24VDC 6~36VDC 6~45VIsolation ProtectionWithout isolationPower isolation, Signal isolationCOMMUNICATIONEthernetRJ45 network portRJ45 with PoE support, IEEE 802.3af compliantRJ45 network portRJ45 with PoE support, IEEE 802.3af compliant2-ch RJ45 network port2-ch RJ45 with PoE support, IEEE 802.3af compliant2-ch RJ45 network port2-ch RJ45 with PoE support, IEEE 802.3af compliantRJ45 network portRJ45 with PoE support, IEEE 802.3af compliant10 / 100M auto-negotiation RJ45 connector, 2 KV surge protectionSerial portRS485Isolated RS485Isolated RS232/485/422 (choose one, only one interface can be used for communication at the same time)2-ch Isolated RS485 (the 2 channels can receive and transmit independently at the same time)Isolated RS232 + Isolated RS485 (the 2 channels can receive and transmit independently at the same time)4-ch isolated RS485 (the 4 channels can receive and transmit independently at the same time)SERIAL SPECIFICATIONBaudrate300 ~ 115200 bpsParity bitnone, odd, even, mark, spaceData bit5 ~ 9 bitsFlow controlN/ASOFTWAREProtocolETHERNET, IP, TCP, UDP, HTTP, ARP, ICMP, DHCP, DNSConfigurationhost, web browser, device management functions libraryCommunication methodTCP/IP direct communication, VCOMOperating modeTCP server, TCP client (coexisting with TCP server), UDP, UDP multicastENVIRONMENT REQUIREMENTOperating temperature-40℃ ~ 85℃Humidity range5% ~ 95% relative humidityDimensions(L × W × H)87.0×36.0×59.0mm88.7×72.5×24.2mm78.0×72.5×24.2mm91.0×64.5×24.2mm