Safety PLC C15 connection to CtrlX Core via Ethercat and to CtrlX Drive via FSOE

Hi,

I'm trying to connect our C15 safety PLC to a CtrlX core via Ethercat protocol from one side and to a CtrlX Drive via FSOE protocol tot hte other side and I have some qiestion about both these connections:

1. C15 to CtrlX Core via Ethercat

I configured the connection as you can see in the attached file and it works but I could not understand why I have a gap in the PLC IOs address where I read and write the information from/to the C15.

Why I read the input dataa from the C15 staring from byte 25 when the 1st input bye is byte 12 ?

What are the previous bytes for ?

Same thing for the plc output : staring address %QB24 and QB56 must be use to set C15 input 0-3

What are the previuos output byte used for ?

2. FSOE communitation from C15 to CtrlX drive

I set the communication as you can see in the attached files but the safety sytatu of the drive do not change even if I set the safety bit commands

Why even if the safety bit of the the 2Byte Bit-Coded SMM (780-784) (Slave 1) function are true the drive safety status is still EMERGENCY STOP ??

Why in the C15 status bar I have the message: "RunIntern" as shown in the pccture above?

What am I missing ?

Many Thanks for your help

Giuseppe