User Manual

Modbus user manual | NANO-NL | November 1, 2022 | version 1.0 page 4
6 C HOOSE A M ODBUS ADDRESS
It is possible to connect multiple devices to one data bus. It is very important to give each device in the
data bus a unique address. This is done via the buttons on the NANO panel front.
6.1 S TEP 1 M ODBUS SETTINGS
Set the NANO in programming mode by pressing
and holding the MODE and the MUTE
button simultaneously for more than 3 seconds.
6.2 S TEP 2 INDICATION
On the front of the NANO, the green power
indicator will flash rapidly. This indicates the
Modbus address of this NANO in the Modbus
programming mode.
6.3 S TEP 3 CHANGE ADDRESS
Press the Mute button shortly to change the
address from address 0 to address 1.
6.4 S TEP 4 CONFIRM CHOICE
To confirm the address, press the MUTE
button for at least 3 seconds or press the Reset
button to cancel. If there is no button
pressed for 60 seconds during this MODBUS
address selection mode. The operation is
automatically canceled.
6.5 S TEP 5 CHECK CONNECTION
To test the connection and the communication,
various tools are available in the market. For
example, the FTDI USB-RS485-WE-1800-BT
cable can be used to connect the hardware to a
PC. A simple and easy to use test application,
among others, is the Schneider Electric Modbus
Tester application for Windows.