Moxa MGate MB3170I-T Specification Guide

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Industrial Ethernet Gateways
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Overview
Integrate TCP Masters without Altering the Modbus RTU/ASCII Network or Software
MGate™ MB3170/3270
1 and 2-port advanced serial-to-Ethernet Modbus gateways
The MGate MB3170 and MB3270 are 1 and 2-port Modbus gateways, 
respectively, that convert between Modbus TCP, ASCII, and RTU 
communications protocols. The gateways provide both serial-
to-Ethernet communication and serial (Master) to serial (Slave) 
communications. In addition, the gateways support simultaneously 
connecting serial and Ethernet masters with serial Modbus devices. 
The MGate MB3170 and MB3270 series gateways can be accessed by 
The MB3270 can integrate Modbus TCP with Modbus RTU/ASCII, 
without modifying the existing Modbus RTU/ASCII architecture or 
software. With the serial redirector function, a serial master can 
up to 32 TCP master/clients or connect to up to 32 TCP slave/servers. 
Routing through the serial ports can be controlled by IP address, TCP 
port number, or ID mapping. A featured priority control function allows 
urgent commands to obtain an immediate response. All models are 
rugged, DIN-rail mountable, and offer optional built-in optical isolation 
for serial signals.
maintain direct access to serial slave devices through a specially 
mapped serial port. This allows the serial and TCP masters to access 
serial slaves simultaneously.
 
Accessible by up to 32 TCP master/client devices, or connect to 
up to 32 TCP slave/server devices
 
Supports up to 31 or 62 serial slave devices
 
Ethernet cascading for easy wiring
 
Serial port routing by IP address, TCP port, or ID mapping
 
Serial redirector function provided
 
Embedded Modbus traffic monitor
 
10/100BaseTX (RJ45) or 100BaseFX (single mode or multi-mode 
with SC/ST connector)
 
Emergency request tunnels ensure QoS control
Priority Control for Urgent Commands (Patented)
As Modbus networks increase in size and complexity, the lag time 
between commands and responses becomes a major concern. 
Advanced models of the MB3000 series provide a priority control 
function for urgent commands, allowing users to force certain 
commands to get an immediate response. Depending on your 
system’s requirements, different methods are available to define which 
commands receive priority. 
Patent Numbers: (US/TW)
US7,743,192 B2 / I332618
US7,725,635 B2 / I321007
The MGate MB3170 fiber series includes 100BaseFX fiber models that 
support transmission distances up to 4 km for multi-mode models, 
and up to 40 km for single-mode models. Optical fiber is well-suited 
for industrial applications because it is immune to electromagnetic 
noise and interference. For environments that experience high ground 
loop voltages, fiber provides the best isolation protection, and because 
there is no danger of sparking, optical fiber is safer than copper wire to 
use in hazardous environments.
Optical Fiber for Ethernet Communications