How to replace 4mb ram with higher capacity during run mode?
Created by: Raheel at: 12/8/2020 6:58 AM (1 Replies)
Rating 
Thanks 0
2 Entries
| 12/8/2020 6:58 AM | |
Joined: 8/10/2006 Last visit: 7/15/2024 Posts: 156 Rating:
|
Hi, Can you clarify if we have to replace 4mb ram with higher capacity during run mode what are the steps to be taken while critical process is running with failsafe logic blocks. Thanks ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 12/16/2020 13:50:00New subject after splitting |
|
| 12/16/2020 2:58 PM | |
Joined: 9/27/2006 Last visit: 11/12/2024 Posts: 12293 Rating:
|
Hello Raheel; Remember that working with a redundant S7-400H allows you to stop one of the CPUs (preferably the standby CPU), making the primary CPU go to solo mode, so you can modify anything you need to change on the stopped CPU, including the memory card. Just make sure that both CPUs have the same amount if load memory when you try to synchronize them again, which implies changing both memory cards while each CPU is stopped, one after the other. This extract from the S7-400H system manual should show you the detailed procedure: https://support.industry.siemens.com/cs/ww/en/view/82478488/26829879307 Hope this helps, |
Last edited by: dchartier at: 12/16/2020 19:09:17 |
|
Follow us on