Hello there, 

I am using S5 115U CPU 944 with Step 5 in Siemens PG. 

My problem is that the CPU is not coming on to run mode.  

I have checked the I stack, it says QVZ (Time-out I/Os) is the cause of interrupt. And on B-Stack it says the following: 

Block no     Block addr     Return addr    Rel addr     DB no     DB addr 

FB1             1899              1917               007E          6             1B9A

OB21          63C7              6457               0090         77             42C4

I am not that experienced in Step 5 and so dont know how to find these addresses. I don't have the assignment or crossreference list as well, from where I can get the info. 

If anyone can guide me please which module is causing it to happen. 

Thanks and regards.

ixo65

This message says that the CPU want read or write to a I/O card and become no answer from the card.

 But this is the problem. I don't understand which card...

ixo65

Make a screenshot of the ISTACK.

ixo65

Make a screenshot of the ISTACK.

 I have uploaded the I-stack... 

Thanks.

Please can you upload the STEP 5 program with all other file programs of the project as a zip file.

Extensions are: .S5D,*.ini., *.seq.

ixo65

Please can you upload the STEP 5 program with all other file programs of the project as a zip file.

Extensions are: .S5D,*.ini., *.seq.

 Hi ixo65, 

Attached us the program with all files extension.

Best Regards.

The problem is a card with the address 128.

The FB1 call the FB156.

Parameter BGDB of the FB156:
BG = Module address = 128
DB = Number of DB = 6 = DB6

Here can you download a PDF for more information.

IP 241 with FB 156/157/158