Delta Electronics UNOnext, Quick Start Manual

Page: 4 / 5

4
Device Settings
1. Check the Modbus RTU slave address settings.
The Modbus RTU slave address is set by DIP switch from [2] to [5] in the back of UNOnext. The DIP definition
corresponding to the slave address is shown as below table.
Modbus Salve Address PIN No. of DIP switches
Decimal Hexadecimal 2 3 4 5
208 0xD0
   
209 0xD1
   
210 0xD2    
211 0xD3
   
212 0xD4
   
213 0xD5
   
214 0xD6    
215 0xD7
   
216 0xD8
   
217 0xD9
   
218 0xDA    
219 0xDB
   
220 0xDC
   
221 0xDD
   
222 0xDE    
223 0xDF
   
2. Check the UART settings.
The UART settings for UNOnext as:

Baud: 9600 by default, also supports 38400, 57600, 115200 modified by Modbus RTU protocol. (See
UNOnext Modbus RTU)

Data-bit: 8

Parity: None

Stop-bit: 1
3. If the UNOnext daisy-chained for longer distances, please pull up the DIP switch [1] to enable Modbus
terminal resister to try.
4. Try a factory reset.