With every CPU startup there is an function of referencing the conveyor and this is not happening

Hi , 

I am using CPU 317 DP, DFP21 Slave from sew has been configured . 

Problem :-

With every CPU startup (i.e.with every STOP-Run transition) , there is an function of referencing the conveyor and this is not happening . when I checked the FB that the particular function is not resetting and an error is there . Therefore when i open the corresponding DBs . , i see thet that the Handdhake bit is True in actual value. Initial Value is false. even I tried to reinitialize it is same.

Therefore next time when I restarted the Main power i am waiting that the the HMI boot loading has been completed and an online connection has been established to CPU. After that I Make ON the control voltage and the conveyor reference has been done. and no problem 

Before online connection establishing to CPU if I make ON the control voltage , then the DB are not resetting that bit and the conveyor is not refering . Please support me to solve this issue.

The picture already highlited this parameter is 1 and not reset to zero . when I go to DB as I MENTIONED ABOVE Handshake bit is 1.

------------------------------------------------------------------------------------------
Split from Reset CPU and DB.