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| 4/7/2012 4:24 PM | |
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Posts: 16 Rating:
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Dear Experts, I have not been able to remove SF from CPU. I m using CPU 315-2 PN/DP. Order # 6es7315-2eh14-0ab0 / v2.6 Attached are the screen shots taken online. It says I/O access error, but no I/O is defined which it is accessing. Kindly give some solution. Regards, AttachmentDiag Buffer.zip (789 Downloads) |
| 4/8/2012 1:44 PM | |
Joined: 10/7/2005 Last visit: 11/18/2024 Posts: 3027 Rating:
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Hello Simancolic while changing the CPU type from an EH13 to an EH14 won't hurt, it is not a must haveand certyainlywill not fix your I/O access error . This is caused by your logic trying to access peripheral I/O's that do not physically exist. One of them - as per your screendump- is 460 and since it is a read access errorit could be either PIB 460 or PIW 460 orPID 460. The easiest way tofind out which part ofyour program is causing this I/O access error is to check the Cross reference or Go To Location for these addresses. Alternatively,delete OB122 from the CPU, your CPU will now go into STOP mode (be aware of this and make sure theCPU is NOT in use for production). Theraftergo back into the Diag buffer and you willfind more detailed entries about the error and can now also use the "Open Block" button which will take you to the part of your proram that is trying to access the non existent I/O's. I hope this helps and please let us know what you find. |
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| 5/22/2018 7:32 AM | |
Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating:
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New question published by sureaaaaa is split to a separate thread with the subject How to troubleshoot BUS FAULT?. Best regards |
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