9/23/2011 11:33 PM | |
Posts: 2 Rating: (0) |
Dear Sirs, We have a PLC S5 135U 928B, that was working very good but we moved from France (50Hz) to Colombia (60Hz) and it has been unconnected 4 months, when we conect the PLC allways goes to STOP and BASP, then we put the EPROM out and reset but the fault remains, we have connected with step5 and we try to erase the program or upload an OB but the RAM does'nt let us, the alarm "memory full" appears. Could you please help us? Thanks a lot. Attachmentsaint-gobain.S5D.zip (302 Downloads) |
9/24/2011 2:51 PM | |
Joined: 10/7/2005 Last visit: 10/19/2024 Posts: 3024 Rating: (1054)
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Hello OGV to start with, the Power supply of your 135U rack is good for 47 to 63 Hz, so this won't be the reason for your problem (see the technical spec in the SIMATIC S5-135U/155U System Manual for more). As for your 928B, what type (part number) is it? The (older) 6ES5928-3UB12double Slot width requires either a RAM or EPROM module. If you have this one (which Ithink you do, or perhaps even an older version) you can NOT download your program unless you plugin a RAM module (or use an EPROM module with the program on it. The (newer) 6ES5928-3UB21 singleSlot widthhas the RAM onboard (i.e. no need to plug in a RAM module) and can optionally also be operated with a Flash EPROM card. Either way, the best way to find out why it won'tgo into RUN is to check the ISTACK and below are links to the manuals where you'll find more information about this. S5-135U CPU 928B - Version -3UB21 manual S5-135U CPU 928B Programming Guide I hope this helps and come back here with more detail on what you findin the ISTACK should you require further assistance. |
Cheers |
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9/26/2011 3:51 PM | |
Posts: 2 Rating: (0) |
Hello Dear Sirs: Our CPU is an 6ES5928-3UB12, I attach the Istack screens,we'd changed for a new batteryand it's ok. As I told you,, we take the EPROM outbut we can not make an overall reset, we can not eraseor load anything in RAM, we have 2 cards and in any of both is possible. Thanks in advance. AttachmentAttachments.zip (352 Downloads) |
9/27/2011 7:40 AM | |
Posts: 33 Rating: (0) |
Hello, According to the I-STAK info PLC go to stop in PB13 address A6(hexadecimal). DB11 was last opened. You can access to the point where PLC is stoped in this way. See attachment file add_pb1.jpg. Select Step 5 Bloks --> In the Program file Bloks : PB13 Search Key: A6H OK Now the programming lines should be displayed in STL representation. After you selected STL representation, press SHIFT & F1 key. You will se the adresses beside instructions. See attachment file add_a6.jpg Beside address A6 is instruction where PLC stopped. Regards LXG Attachmentadd.zip (323 Downloads) |
Last edited by: LXG at: 9/27/2011 8:03 AMLast edited by: LXG at: 9/27/2011 8:01 AMLast edited by: LXG at: 9/27/2011 7:58 AMLast edited by: LXG at: 9/27/2011 7:57 AM |
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