LMGateway201-MQTT


MQTT Gateway


LM Gateway201-MQTT data acquisition gateway, based on a solid hardware platform design, a complete software kernel. Provide 2 RS-485 serial ports and 1 10/100 Mbps Ethernet port. The gateway embeds Modbus, BACnet, DLT645 and other data acquisition drivers to provide private protocol driver integration. The gateway and cloud platform use the instant messaging protocol MQTT to transmit data. The data points of the gateway are pushed to the cloud through the mechanism of subscription and release. The cloud can pass through the gateway to the front end. Device read and write operations


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CPUARM926EJ,300MHz
RAM64MByte High performance memory
Nand Flash128MByte SLC Flash
Serial portRS485X2
Network port1 100M/10M Ethernet interface
PowerDC9V~36V
Total Weight170g
Enclosure ratingIP51
Mechanical Dimensions130mm×109mm×35mm(L×W×H)
Mechanical installationDIN rail card slot fixing
Power consumptionThe maximum power consumption of the motherboard is ≤3W
Operating temperature-40~80℃
Working relative humidity20 to 90% non-condensing
InstrumentationData acquisition driverSerial portNetwork port
Modbus protocolModbus RTUModbus TCP, Modbus RTU_over_TCP
DLT645 protocolDLT645-1997, DLT645-2007/
CJ188 protocolCJ188/
MbusMBus_EnergyMeter, MBus_EN1434/
PLCMitsubishi AgreementMitsubishi Fx3U/
Mitsubishi Fx485/
Mitsubishi_QBinary/
Siemens protocolSiemens S7-200 PPISiemens S7-200 Network
/Siemens S7-300 Network
/Siemens S7-400 Network
/Siemens S7-1200 Network
/Siemens S7-1500 Network
AB/AB NET
OMRON ProtocolOMRON_HOSTLINKOMRON_FINS
Building communicationBACnet protocolBACnet MS/TPBACnet IP
Industrial control and automation interface standardsOPC protocol/OPC UA, OPC DA, OPC XML DA
Substation communication standardIEC protocol/IEC104
Non-standard protocolInstrumentationYiling temperature controller/
dlt645 JX Digital/
dlt645-2007 extended protocol/
Jiangsu Runyi Water Meter/
HL-MODBUS protocol/
CJ/T133-2012 IC card water meter/
DLT645-Fee Control/
CJ/T133-2012 MBus IC card water meter/
ModbusRTU_TancyA1/
Allen_Bradley_DF1/
modbus Shendong 43/
CJ188贵翔/
Beijing Mingcheng Zhonghui Sunshade Curtain/
SGA400/
DEET-BUS/
Internet interfaceInternet collection/mqtt client subscription
/Gold map weather forecast
/Zhejiang Dahua HTTP
/HTTP collection
/Air Quality
  • The gateway can be used as an MQTT client to connect to the private cloud Alibaba Cloud, Baidu Cloud, Tencent Cloud, etc.,

    and push the data points of the gateway to the cloud through the mechanism of subscription publishing, and the cloud can

    read and write the front-end device through the gateway.


  • The gateway provides an http server, which supports two commonly used methods: GET and POST.





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