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12/29/2007 10:23 AM | |
Joined: 1/7/2006 Last visit: 11/17/2023 Posts: 2705 Rating: (318)
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Hi, I agree with Daniel that you could look in the diagnostic buffer and program OB85/OB86 and OB82 Sometips: 1.Look how big the diagnostic buffer is, you could change the amount of messages... normally that is on 120 messages, if you have enough work memory you may place it on 1000 so that you could see all the errors that where coming before the error-message. 2.Please place the time on the right time so that you could see if it is coming on a certain time and if it comes more times after each other. You could then also see if it is always the same slave. 3. Place in the hardware configuration the OB85 calls on "Only for incoming and outgoing" errors, so that errors with I/O only coming once and not your hole diagnostic buffer is flooded with I/O messages because you are calling I/O from your program that is not there any more... 4. Check the Firmware of the CPU, for (very) old ones there was also a update for the Master on the CPU. See also the other threads about this, for example: I'm suffering of OB86 : Rack Failure and More when 32 nodes at one profibusand there are more that say something about building up a network the right way and so on. |
I hope that the answer will help, if you have still questions, don't hesitate to ask me. |
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