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Alarm in Sinumerik 840C

7/23/2011 6:52 PM	Rate (0)
Pipo63 Posts: 12 Rating: (0)	Hello: I need to know that references this alarm in a 840C Sinumeirk: E555 LH DDE [15] *XTYP_REQUEST (synchron) (#0)* Attaching photos of the state boards. Thanks Attachment DSC00667.JPG (205 Downloads)
Pipo63 Posts: 12 Rating: (0)
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7/24/2011 9:05 AM	Rate (0)
Pee El Sea Gold Member Joined: 1/19/2008 Last visit: 10/20/2025 Posts: 998 Rating: (65)	HI, That looks like an mmc problem to me DDE is the data interchange. Any fault with the NC or PLC cards generates communication alarms but the normal screens still load. I would guess that this error comes up before the normal screen appears. Pee

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7/26/2011 5:49 PM	Rate (0)
rantu Posts: 38 Rating: (0)	Dear Sir, I think there is some corruption in your Hard disk data. Asi see PLC CPU is in Stop & NC also is in booting stage & MMC CUP no LED. If you have data backup then you can try once general reset other wise do not try any thing. Call Siemens Engineer for futher analysis & solving problem. If you have backup then try putting CSB in 4 and check if you get General reset screen then try just END general reset and see. Regards, Rantu
rantu Posts: 38 Rating: (0)
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7/27/2011 3:37 AM	Rate (0)
Ekalavya Posts: 2964 Rating: (485)	Hello..... Check this doconweb link for the clearing steps https://www.automation.siemens.com/doconweb/content.asp?item=5582&cd=840c_1101_e&scope=all Regards, Ekalavya
Ekalavya Posts: 2964 Rating: (485)
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