9/24/2017 11:04 AM | |
Posts: 42 Rating: (0) |
Is it possible to format a memory card like one attached in the pics? My pc is not communicating to plc cpu when memory card is in the cpu and as soon as i plug it out it begins to communicate?
AttachmentMemory Card.zip (401 Downloads) |
Last edited by: Programming Lover at: 9/24/2017 11:16:00 AM |
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9/24/2017 11:44 AM | |
Posts: 41 Rating: (0) |
Mc951 is ram and cant hold the data .use mc952 flash memory . pg's has special port that you can program this kind of memory |
9/24/2017 1:25 PM | |
Posts: 42 Rating: (0) |
Sir is there nothing that i can do this with memory card? If yes than what can i do? Anyone? |
9/24/2017 2:54 PM | |
Joined: 9/27/2006 Last visit: 5/19/2024 Posts: 12257 Rating: (2668)
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Hello PL: This is a RAM card, and there is no formatting that can be done on it. Data is transfered by the CPU while the cPU is active, and if the battery of the CPU is functionnal it will sustain the data on the RAM card while the CPU is powered off. What you should find out at this point is whether the CPU recognizes the RAM card. To do so open the CPU properties (double-click on your CPU in HWCpnfig) and open the memory tab, There should be a Load memory zone in the image presented there, that corresponds to ithe internal RAM + the memory card. What size does it show? If it is 2Bb or more the the CPU sees the RAM card. If not, then the RAM card is probably defective. If the CPU sees the card, then you must make sure the battery is still functionnal. If it has not been changed in a while (or if you do not know when it was changed) then simply replace it.Hve a look at this document for the part numbers and 3rd-party providers of these batteries: Where can you find information about the S7-300/400 backup batteries? Hope this helps, Daniel Chartier |
9/26/2017 9:19 PM | |
Posts: 42 Rating: (0) |
Sir Daniel i couldn't find something related to load memory only found work memory= 64kb i have attached the screenshot of all the tabs of cpu properties. moreover i have also attached pics in the next attachment of testing of plc battery and the fault that plc is giving when ram card is intact plz tell me what to do now?
AttachmentWork Memory.zip (128 Downloads) |
Last edited by: Programming Lover at: 9/26/2017 10:46:19 PM |
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9/26/2017 9:23 PM | |
Posts: 42 Rating: (0) |
Pics of Plc fault when ram card is intact. Plz tell me now what to do AttachmentWork Memory.zip (86 Downloads) |
9/26/2017 9:25 PM | |
Posts: 42 Rating: (0) |
Pics of battery testing. Plz tell me what to do next
AttachmentWork Memory.zip (70 Downloads) |
10/2/2017 5:27 PM | |
Posts: 42 Rating: (0) |
you know sir daniel my memory card worked and it worked as i applied contact cleaner to tissue paper and then cleaned the memory card with it. Here are the attached pics of cpu reading the card
AttachmentCapture.zip (92 Downloads) |
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