1/27/2017 4:11 PM | |
Posts: 70 Rating: (0) |
Hello experts, If I perform a Cold Restart on S7 400 CPU, does it delete the values on DBs on Memory card or CPU? Thanks for your help. Best regards, Dave |
1/27/2017 5:55 PM | |
Joined: 12/9/2010 Last visit: 10/8/2022 Posts: 623 Rating: (77) |
Hi DaveSeda, Cold restart deletes all user program and data in work memory. So DB values are not initialized and hence not cleared. DB values can be initialized with the command available in DB editor-Initialize data block and save and download. |
If you like the comment, rate it (right top) or thank it (left bottom). |
|
This contribution was helpful to1 thankful Users |
1/31/2017 12:44 PM | |
Joined: 11/29/2011 Last visit: 9/24/2024 Posts: 1359 Rating: (232) |
Hi, The CPU retentivity is an interesting topic, read the What does the terms Initial value (declaration view), Initial value (load memory) and Actual value mean in data blocks when a controller is loaded / restarted? article to get a better understanding of the process. If you need any further help, please come back for more information. I hope I could help! |
- What you read here, please check with manuals and your requirements. |
|
Follow us on