Ma'm please help me out.I want to activate external I/O in two RCM4000 so as to transfer data from one module to other.

Rabbit Rabbit Software
1

So ,should I make RCM4000 1 as slave and RCM4000 2 as master.?Can you provide the commands to activate the registers? Or can you Please tell which all registers to be activated?

2

To use external IO you need to put the following at the top of your code:

#define PORTA_AUX_IO

If you want to use two boards as master and slave see samples\slaveport*.c.