MGate MB3000 Modbus Gateway User Manual
With port routing mechanisms, Modbus slave ID routing can be simpler and more effective by giving users
the flexibility to define a multirouting mechanism.
Slave ID Table
With the slave ID table, a routing mechanism is achieved for gateways with two or more serial ports. Since
the Modbus devices (all with different slave IDs) are connected to different serial ports on a gateway, the
Modbus requests should be routed to the specific serial port that connects the targeted Modbus slave
device.
This keeps communication efficient and prevents devices on other ports to receive an unrelated Modbus
request, resulting in slowing down the whole system. The slave ID table is used to handle the routing
mechanism.
Traditionally, there is a factory default routing. For example, the Modbus requests with slave ID 001~005
will be routed to serial port1; the Modbus requests with slave ID 006~010 will be routed to serial port2.
Users have to set their own customized routing. Select the one you want to set, and click Add/Remove/
Modify buttons to change the existing routing. Set each port one by one.
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