Description
The GW-2139M is a network gateway allowing Modbus TCP client devices to access a BACnet MS/TP network as a BACnet MS/TP master. The BACnet Master Slave Token Passing (MS/TP) protocol is used to relay and exchange information between building devices. GW-2139M contains a large number of BACnet objects (AI, AO, AV, BI, BO, BV, MSI, MSO, MSV) gives you flexibility in mapping Modbus TCP registers to any combination of BACnet objects. BACnet interoperability building blocks (DS-RP-A, DS-RPM-A, DS-WP-A, DS-WPM-A, DM-DDB-A, DM-DOB-A, DM-DCC-A, DM-RD-A) are Supported. All the data transfer is configurable using a Utility.

Features
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Read/Write standard BACnet objects via modbus
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Configurable BACnet MS/TP master
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Configurable Modbus TCP Server
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Simple data translation allows you to manipulate data as it passes between protocols
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Supports BACne AI, AO, AV, BI, BO, BV, MSI, MSO, MSV Object Types
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Supports Modbus “coils”, input registers, holding registers ‧BACnet object properties mapping configured via Modbus register
Specifications
LED Indicators
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Status
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Power (1), BACnet MS/TP Status (1), BACnet MS/TP Net(1),
Modbus TCP TxD/RxD/Link (3)
Ethernet LED Ethernet Status (RJ-45) (2)
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COM Ports
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Ports
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termninal block(D+, D-)
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Baud Rate
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9600, 19200, 38400, 76800
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Terminal Resistor
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Built-in 120 ohm terminator resistor, enabled/disabled via Jump
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Isolation
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3 kV VDC for DC to DC, 2500 Vrms for photo couple
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Ethernet
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Protocol
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Modbus TCP Server
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BACnet MS/TP
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Modbus
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BACnet MS/TP Master
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Max. Connection
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32
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Objects
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AI, AO, AV, BI, BO, BV, MSI, MSO, MSV
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BIBBs
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DS-RP-A, DS-RPM-A, DS-WP-A, DS-WPM-A, DM-DDB-A, DM-DOB-A, DM-DCC-A, DM-RD-A
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Power
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Consumption
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5 W @ 24 VDC
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Mechanical
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Casing
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Metal
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Dimensions (mm)
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33 x 120 x 116
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Installation
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DIN-Rail
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Environmental
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Operating Temperature
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-25 ~ +75 °C
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Storage Temperature
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-30 ~ +80 °C
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Humidity
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10 ~ 90% RH, Non-condensing
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Technical
GW-2139M BACnet MSTP to Modbus TCP Gateway datasheet
Applications
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Building Automation
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Heating, Ventilating, and Air-conditioning Control
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Lighting Control
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Access Control
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Fire Detection Systems