2 modbus rtu, 1 modbus rtu host controlled operation, 2 modbus rtu with multiple slave devices – Banner SureCross DX80 Wireless Networks User Manual
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6.2 Modbus RTU
6.2.1 Modbus RTU Host Controlled Operation
A simple host-connected system uses an RS-485 serial cable to connect the Gateway to a host system.
The host system may be a PC or a PLC unit. Because the serial cable is used to connect to a host system, the
communications protocol used is Modbus RTU. The wireless network is a Modbus slave. In this configuration, the wireless
network collects I/O data and sends it back to a Modbus host system.
1
Wireless Network
Host System
(Modbus Master)
2
Modbus Slave
Item Model No.
Description
1
DX80G...
DX80 or DX80 Performance Gateway
2
CSRB-M1250M125.47M125.73
Cable, RS-485, quick disconnect 5-pin Euro, male trunk, female branches, black
MQDC1-5***
Cable, RS-485, quick disconnect 5-pin Euro, female single end, lengths vary (not
shown)
SureCross Wireless I/O Networks
57