Banner SureCross DX80 Series - Modbus RTU with Multiple Slave Devices - Layout 2

6.2.3 Modbus RTU with Multiple Slave Devices - Layout 2
In this example host controlled configuration, the Gateway is a Modbus slave to the host system, but remains the master of the wireless
network.
The Gateway is connected directly to the host system using a fieldbus connection. This system also connects DX85 Modbus
RTU Remote I/O devices and a third-party Modbus slave device to the serial bus to expand the available I/O. The Gateway
and each DX85 connected as shown below are Modbus slave devices to the host system.
Purpose: This wireless network collects I/O data and sends it back to a Modbus host system, but adds local wired I/O
points and expands the network using a fieldbus connection.
Fieldbus Connection
Modbus Slave 4 Modbus Slave 5
2 2
1
Modbus Slave 1
Wireless Network
Host System
(Modbus Master)
4
1
Modbus Slave 3
Wireless Network
4
Modbus
Slave 6
1
Modbus
Slave 2
Wireless Network
4
3
Item
Model No. Description
1 DX80G... DX80 or DX80 Performance Gateway
2 DX85M... DX85 Modbus RTU Remote I/O
3 Third party Modbus slave device
4 DX80N... DX80 or DX80 Performance Nodes or FlexPower Nodes
SureCross DX80 and Performance DX80 Product Manual
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