
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
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