Hello,

I have created a program, and when I test it in simulation, it works correctly. It also works when uploaded to the Siemens LOGO! device. However, the program stops working after the LOGO! has been powered off.

Output Q1 turns high, and the LOGO! no longer responds to any input. Additionally, I no longer see the display showing the number of cycles. When I re-upload the program, it works again. But after the PLC has been powered off, the same issue returns.

I hope someone can help me solve this problem.

[attached] is the program


Kind regards,
Jan-Willem

Yes, there is a SD card in the LOGO.
if i run another program that i made the LOGO works fine. 
The only issue that have is the cycle counter on the LOGO display, only after the first time i upload the program to the LOGO.
After powering off its doesn't show the cycle counter anymore, only the screen with time and date.

I'm still very inexperience with this type of programming.  

Something in the program self is wrong, but i still can not figure out what it is.
 
 

Why don't you answer to my questions?

Or mean you with your "Yes" that you a SD card with a program in the LOGO!?  

ixo65

Do you have an SD card in your LOGO! that contains a program?

yes there is a SD card in the siemens LOGO

Thank you for your response. It appears that the option to save the program to the SD card was disabled in LOGO! Soft Comfort V8. Fortunately, the program is now functioning correctly. 
I was initially misled because a different program was operating as expected, which caused some confusion.