PLCsim can't reach CPU

I am using Simatic Manager for S7315 2PN/DP processor for different machines and able to simulate one of my machine program with S7 PLCsim but I don't know when I try to do this with other program it always give me below mentioned error and I am unable to simulate the other program.

I check all my PG/PC interface setting they are perfectly fine and really unable to figure out the problem.

 can anyone support me here.

----------------------------------------------------------------------------------------------------
Split from simulation simatic manager.

Hello,

I am using Simatic Manager for S7315 2PN/DP processor for different machines and able to simulate one of my machine program with S7 PLCsim but I don't know when I try to do this with other program it always give me below mentioned error and I am unable to simulate the other program.

What is the exact order number of the CPU you are using?Normally , for S7-315 2PN/DP  the DP port has the both MPI/DP function and it can be selected.So, you should change your interface to PROFIBUS , if it is configured that way.

I hope this helps,

hdhosseini

Thanks hosseini but when I select profibus and trying to go online to monitor bits it is giving me this error

It seems to be downloading but I am unable to monitor now

During downloading in simulation process I usually get this option

I always press yes but was just concerned will it change anything in the properties of the CPU module as we. Let's say right now I am just simulating but when I will download the program directly to PLC module of machine will it effect anything in the downloading procedure.

But when I open simulator through simatic manager I only get download option not the one download with compile. So how can I compile before downloading and simulating.