By epris
#2186
Dear all,

i have bought a DFRurduino I/o expansion v5.0 shield.
I want to use it for a Modbus communication over Rs485.
I don't know how to selection jumper must be placed for select RS485 and not APC.
I have tried to see schematics but i'm not able to find a solution.

Can you help me?

Thank you!!
Antonio
By Hector
#2187
Hi Epris,


With the IO Expansion shield facing you and the Xbee module closest to you, on the top left side there is a set of 3 jumpers on one side it says "APC" on the other RS-485, just move all three jumper from left to right. That will enable the RS-485


If you need more help just let me know :)


Happy hacking!