By epris
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!!
By Hector
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!