https://forge.codesys.com/forge/talk/Runtime/thread/170a3edf96/2021-11-10T06:33:39.166000ZRecent posts to Saving data in powerfail2021-11-10T06:33:39.166000Z2021-11-10T06:33:39.166000Zjauerhttps://forge.codesys.com/u/jauer/https://forge.codesys.comd2f2ccd52ac602b68fa082d635e5c4e435c20d8b

<div class="markdown_content"><p>I'm declaring them exactly like explained in the file you mentioned...</p> <p>But if I watch the usage of the memory in the development system, the size of the retain memory stays the same.</p></div>

2021-11-09T19:30:24.669000Z2021-11-09T19:30:24.669000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.com9aa153575eb365309f6a73c74fe15ded13253046

<div class="markdown_content"><p>How are you declaring your variables in your project?<br/> <a href="https://help.codesys.com/webapp/_cds_setting_up_persistence;product=codesys;version=3.5.17.0" rel="nofollow">https://help.codesys.com/webapp/_cds_setting_up_persistence;product=codesys;version=3.5.17.0</a></p></div>

2021-11-09T08:51:11.330000Z2021-11-09T08:51:11.330000Zjauerhttps://forge.codesys.com/u/jauer/https://forge.codesys.combd7091c23a1b9c14128bf16c384363ae8b76fb4f

<div class="markdown_content"><p>Thanks for your response <a class="user-mention" href="/u/i-campbell/">@i-campbell</a>. Unfortunately I wasn´t able to continue with my work until now.</p> <p>I added the settings in my config file but there is no difference to before and the variables get written in the normal memory.<br/> I tried it with writing in the CODESYSControl.cfg and in the CODESYSControl_User.cfg but in both cases it didn't work. After implementing the settings I rebooted the system and I tried different address areas (beginning of the NVRAM and somewhere in the middle of the NVRAM-address area).<br/> Did I forget something?</p> <hr/> <p>My Code:</p> <p><span>[CmpRetain]</span><br/> Retain.SRAM.Size = 0x20000<br/> Retain.SRAM.Address = 0x9A8E2A4</p> <p><span>[CmpApp]</span><br/> RetainType.Applications = InSRAM</p></div>

2021-09-24T08:42:23.008000Z2021-09-24T08:42:23.008000Zi-campbellhttps://forge.codesys.com/u/i-campbell/https://forge.codesys.coma0c85f738c1251a90e20a079b1d84fc7738fd749

<div class="markdown_content"><p>You need these settings in your <a class="" href="https://faq.codesys.com/display/CDSFAQ/Location+of+the+configuration+file" rel="nofollow">config file</a></p> <div class="codehilite"><pre><span></span><span class="k">[CmpRetain]</span> <span class="na">Retain.SRAM.Size</span><span class="o">=</span><span class="s">0x100000 </span> <span class="na">Retain.SRAM.Address</span><span class="o">=</span><span class="s">0x30000000</span> <span class="k">[CmpApp]</span> <span class="na">RetainType.Applications</span><span class="o">=</span><span class="s">InSRAM</span> </pre></div> <p>the address and size should match your actual NVRAM.</p></div>

2021-09-24T06:37:59.233000Z2021-09-24T06:37:59.233000Zdjole01https://forge.codesys.com/u/djole01/https://forge.codesys.comf8f17b1071994e1f55fe0c3da67ce3950f7ecb32

<div class="markdown_content"><p><a href="https://help.codesys.com/api-content/2/codesys/3.5.12.0/en/_cds_vartypes_retain_persistent/" rel="nofollow">https://help.codesys.com/api-content/2/codesys/3.5.12.0/en/_cds_vartypes_retain_persistent/</a></p></div>

2021-09-24T06:20:02.541000Z2021-09-24T06:20:02.541000Zjauerhttps://forge.codesys.com/u/jauer/https://forge.codesys.comffdf406f527cfdbda660670825f48c09694c73c9

<div class="markdown_content"><p>Hello everyone,</p> <p>I´m developing a hardware-project with CODESYS implementation and I need to ensure that the data on my PLC-hardware is saved in the case of a powerfail. I know that this works with a FRAM or a UPS and I have implemented both on my hardware. I want to use a real-time Linux OS and I have an ARM processor so I use the "CODESYS Control for Linux ARM" Runtime.</p> <p>My question is how I´m able to adjust that the persistent variables are saved on the FRAM? Do I only have to adjust it in Linux and the Runtime communicates with it or do I have to adjust something in the Runtime settings so that persistent variables are getting a own address?</p> <p>Thank you for your answers.</p></div>