SureCross™ WirelessTechnical Note
Quick Start Guide:
Modbus Cable Replacement
Step by step guide to replace your Modbus 485 cable with Banner MultiHop
STEP 1) Start with a running wired Modbus network. There are many Modbus masters
and slaves available on the market. Some devices support a limited set of function
codes or have other limitations. The Master and slave need to be properly configured to
each other. Solve these configuration issues before inserting the data radios.
STEP 2) Configure the master and slave system to be compatible with the SureCross
Data Radios. But, do not add the radios yet.
a. Set Communication Parameters: 19,200 baud, 8 bit, no parity and 1 stop bit.
b. Set the masters time out to 2 seconds or 2000mS
c. Limit the data size per telegram to 60 words for the 2.4GHz, or 75 words for
the 900MHz version of the data radio.
d. Set the Modbus address of the slave device to address 11- By default the
Multihop Data Radio only relays messages to modbus address 11-60 other
address are ignored. This can be configured but these are the default
STEP 3) Confirm that with the above settings made the WIRED system still works
properly without the radios.
STEP 4) Set the Data Radio rotary address switches to FF. This means they do not
have a Modbus address themselves and are not a slave on the network. Break the
wired connection and add the radios in the middle. You should see no change in the
To communicate with the remote Data Radio itself, it can become a modbus slave itself.
To do this, it will need a previously unused Modbus address. For example give it 31
(use the rotary switches on front.) This is needed when using a remote radio with I/O
built in like the DX80DR9M-H1.