6.1.3 Gateway Configured as a Modbus Master
This example network uses the Gateway as master of the wireless network and master of the Modbus network. This configuration is
used when the I/O capacity of the Gateway is exceeded.
The Gateway is configured with a table of mapping entries that allow the DX85 Modbus RTU Remote I/O devices (as Mod-
bus slaves) to be mapped to the wireless Nodes. The DX85 devices add additional I/O points to the network through hard-
wired fieldbus connections on the Gateway side.
Fieldbus Connection
Modbus Slave 2 Modbus Slave 3
2 2
1
Gateway as Modbus Master
(Slave ID 1)
3
Wireless Network
Item
Model No. Description
1 DX80G... DX80 or DX80 Performance Gateway
2 DX85M... DX85 Modbus RTU Remote I/O
3 DX80N... DX80 or DX80 Performance Nodes or FlexPower Nodes
81398 User Configuration Tool (free to download from the Wireless Products section of Banner
Engineering's website)
BWA-HW-006 RS-485 to USB adapter cable (not shown)
SureCross DX80 and Performance DX80 Product Manual
Rev. J www.bannerengineering.com - tel: 763-544-3164 57
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