Modbus Rtu With Multiple Slave Devices - Layout 2 - Banner Sure Cross Performance DX80 Instruction Manual

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Sure Cross Performance DX80 Wireless I/O Networks

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.
Modbus
Slave 6
Item Model No.
1 DX80G...
2 DX85M...
3
4 DX80N...
56
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Modbus Slave 4
Host System
(Modbus Master)
2
Fieldbus Connection
Modbus Slave 1
3
1
4
Wireless Network
Description
DX80 or DX80 Performance Gateway
DX85 Modbus RTU Remote I/O
Third party Modbus slave device
DX80 or DX80 Performance Nodes or FlexPower Nodes
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Modbus
Slave 2
Modbus Slave 5
1
2
Modbus Slave 3
4
Wireless Network
Wireless Network
4
1