BF609 - PVP


I'm trying a simple PVP function,

data from source(memory)-->IPF1 --> OPF3-->Destination(memory)

I understood like, if only IPF1 and OPF3 are used data will be same in both input and output. Because no other modules were interfered. 

Please find the attachment for actual code.

Please explain the actual senario

Problem: it is giving output as







expected output: