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Protocol Gateways, 2-Port, Modbus Gateway, MGate MB3180/MB3280/MB3480 Series

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Mfg Part Number:  MGate MB3280  
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Price: $419.23
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MGate MB3000 Series
Easily integrate different Modbus networks

Seamless communication between Modbus Ethernet and Modbus serial devices

As one of the most popular automation protocols in the world, Modbus is the standard used for communication between many industrial devices, such as PLCs, DCSs, HMIs, instruments, meters, motors, and drivers. Although Modbus can be used for both serial (RS-232, RS-422, and RS-485) devices and newer Ethernet devices, the serial and Ethernet protocols are so different that a gateway is required in order for one protocol to communicate to the other. The MGate MB3000 is specially designed to integrate Modbus TCP and Modbus RTU/ASCII networks, with one Ethernet connection and up to four serial ports.

Powerful options for master/slave configuration between Modbus networks

Master and slave devices must be clearly defined in a Modbus network. Unlike other Modbus gateways, the MGate MB3000 allows protocol conversion in two directions, from Ethernet master to serial slave and from serial master to Ethernet slave. To ensure maximum compliance with all Modbus networks, extra address mapping and exception parameters can be adjusted to handle almost any situation.

Easier integration with automatic calibration of response timeout (patent pending)

Every Modbus device should be assigned a response timeout value, as provided by the device manufacturer based on the computation required for a request. However, manually obtaining and setting these values for every device is difficult and time-consuming, especially in complex networks with a large number of devices. The MGate MB3000 eliminates this difficulty with a patent-pending feature that automatically determines and sets each device's response timeout value

Multiple masters across different Modbus networks, with fully compliant operation

The MGate MB3000 supports 16 simultaneous TCP masters with up to 32 simultaneous requests per master. Serial masters are able to access up to 32 different IP addresses as TCP slaves. MGate MB3000 gateways have been designed so that even with multiple masters across different Modbus networks, communication remains compliant with each Modbus protocol.


Built-in optical isolation for industrial device protection

The advanced models of the MGate MB3000, including the MB3170, MB3270, and MB3470, offer built-in serial optical isolation as an option. Optical isolation prevents dangerous ground loops, spikes and surges.

Priority control for critical commands (patent pending)

Other Modbus gateways simply transfer all requests between Modbus networks on a FIFO (first in first out) basis, with no accommodation for urgent commands that require immediate attention. The advanced models of the MGate MB3000, including the MB3170, MB3270, and MB3470, include a patent-pending priority control feature that allows urgent commands to be flagged for immediate response based on IP address, command type, or TCP port. With the priority control feature, the MB3000 advanced models are ideal for developing real-time control systems that would be unable to tolerate the latency issues typical of other Modbus gateways.

Zero change to existing architecture with smart routing and serial redirect

Multiport models of the MGate MB3000 include smart routing for enhanced compatibility with existing Modbus networks. Other Modbus gateways require a separate socket connection for each serial port, making them useless for TCP masters that can only open one connection. With smart routing on the MB3000 Modbus gateway, a TCP master can use just one socket connection to command serial slaves on every serial port.
  MGate MB3000 advanced models provide a serial redirector function to allow additional options for Modbus network integration. With the serial redirector function, a serial master's commands can be redirected to serial slaves on another port. In addition, a serial master can operate simultaneously with TCP masters or other serial masters, without altering the Modbus architecture or software. Using the serial redirector function, advanced MB3000 gateways can establish redundant backup control or Ethernet monitoring of Modbus networks that were originally designed for a single serial master.

Powerful, easy-to-use Windows utility

Configuration features
MGate Manager is a Windows utility that enables you to do the following:

  · Search for all MB3000 gateways on the LAN
  · Remotely configure MB3000 gateways
  · Monitor devices attached to MB3000 gateways
  · Remotely upgrade the firmware on MB3000 gateways

Multi-language support
MGate Manager is designed for configuration and monitoring of MB3000 gateways. The utility is easily customized to use the language of your choice.


Protocol analysis tool for all Modbus communication
The monitor function can be used to log all Modbus commands and responses that pass through the MB3000 gateway. All data is presented in a clear, easy-to-understand format, and logs can be filtered for easier analysis. With a single click, users can view exceptions, specific SIDs, traffic to/from specific sources (serial ports, IPs), or all traffic.


Power Requirements
Power Consumption MGate M3180: 200 mA (max.)
MGate M3280: 250 mA (max.)
MGate M3480: 385 mA (max.)
Input Voltage 12 to 48 VDC
Power Connector MGate MB3180: Power jack
MGate MB3280/3480: Power jack and terminal block
Utilities MGate Manager for Windows 98/ME/NT/2000, Windows XP/2003/Vista/2008/7 x86/x64
Operation Modes RTU Slave, RTU Master, ASCII Slave, ASCII Master
Multi-master and Multi-drop Master mode: 32 TCP slaves
Slave mode: 16 TCP masters (request queue 32-deep for each master)
Bonus Feature Smart Routing
Serial Communication Parameters
Flow Control RTS/CTS, DTR/DSR (RS-232 only)
Data Bits 7, 8
Parity None, Even, Odd, Space, Mark
Stop Bits 1, 2
Baudrate 50 bps to 921.6 Kbps
Ethernet Interface
Connector 8-pin RJ45
Speed 10/100 Mbps, Auto MDI/MDIX
Magnetic Isolation Protection 1.5 KV built-in
Number of Ports 1
Environmental Limits
Operating Temperature 0 to 55°C (32 to 131°F)
Storage Temperature -20 to 70°C (-4 to 158°F)
Ambient Relative Humidity 5 to 95% (non-condensing)
Physical Characteristics
Weight MGate MB3180: 340 g
MGate MB3280: 360 g
MGate MB3480: 740 g
Dimensions Without ears:
MB3180: 22 x 52 x 80 mm (0.87 x 2.05 x 3.15 in)
MB3280: 22 x 77 x 111 mm (0.87 x 3.03 x 4.37 in)
MB3480: 35.5 x 103 x 158 mm (1.40 x 4.06 x 6.22 in)
With ears:
MB3180: 22 x 75 x 80 mm (0.87 x 2.95 x 3.15 in)
MB3280: 22 x 100 x 11
Housing Metal, IP30 protection
Serial Interface
Connectors DB9 male
Serial Standards RS-232/422/485, software selectable
RS-485 Data Direction Control ADDC® (automatic data direction control)
ESD Protection 15 KV for all signals
Number of Ports MB3180: 1
MB3280: 2
MB3480: 4
MTBF (mean time between failures) MGate M3180: 628,376 hrs
MGate M3280: 503,029 hrs
MGate M3480: 295,812 hrs
Serial Signals
RS-485-4w Tx+, Tx-, Rx+, Rx-, GND
RS-485-2w Data+, Data-, GND
RS-422 Tx+, Tx-, Rx+, Rx-, GND
Standards and Certifications
EMI EN 55022 Class A, FCC Part 15 Subpart B Class A
Safety UL 60950-1, EN 60950-1
EMS EN 55024,
EN 61000-4-2 (ESD) Level 2,
EN 61000-4-3 (RS) Level 2,
EN 61000-4-4 (EFT) Level 2,
EN 61000-4-5 (Surge) Level 2,
EN 61000-4-6 (CS) Level 2,
EN 61000-4-8,
EN 61000-4-11,
EN 61000-4-12
Warranty Period 5 years
Details See
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