SIMATIC Panel

OP77A freeze at "Start"

Thread Starter: gav_33   Started: 1/9/2009 5:41 AM   Replies: 7

  1/9/2009, 5:41 AM

gav_33 Joined 1/9/2009 Last visit: 1/19/2009 Posts: 3 Rating:  (0)	(0)  Hi all, i encounter a Simatic Panel OP77A that freeze at "Start" cursor after every power ON (after bootloader), refer attachment. It does not even want to respond on the UP and Down key. This situation happen right after a 2 weeks plant shutdown. Please advise. Thanks in advance. Attachment: Image018.jpg  (38 Downloads)
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  1/9/2009, 8:02 AM

*Manfred* Joined 5/28/2008 Last visit: 4/14/2013 Posts: 897 Rating:  (122)	(0)  Wich software do you use? maybe you need a hotfix or else... regards manfred
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  1/9/2009, 11:26 AM

gav_33 Joined 1/9/2009 Last visit: 1/19/2009 Posts: 3 Rating:  (0)	(0)  I am using WinCC flexible 2007 V1.2.0.0_1.55.0.1. This panel have been operating for almost a year without problem. With this current problem, i could not even perform another download to the panel with the same software. The transfer stops at 'Preparing connection to the device...'
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  1/9/2009, 4:38 PM

*Manfred* Joined 5/28/2008 Last visit: 4/14/2013 Posts: 897 Rating:  (122)	(0)  Then please try to install an new servicepack or hotfix. got to this side http://support.automation.siemens.com/WW/view/en/28882233 and try this... regards manfred
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  1/10/2009, 7:03 AM

gav_33 Joined 1/9/2009 Last visit: 1/19/2009 Posts: 3 Rating:  (0)	(0)  After installing the hotfix 4. I still could not perform download or OS update, same problem. Should i send the panel back to the manufacturer?
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  1/12/2009, 12:05 PM

The Brain Joined 10/19/2005 Last visit: 4/11/2013 Posts: 1462 Rating:  (96)	(0)  Hi, at first, i would try to make a "Reset to factory settings" (not "os update"!). For this you need a "null modem wire" Look to this FAQ -> http://support.automation.siemens.com/WW/view/en/19701610 When this does not help, then you should send the panel to repair, regards,
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  4/5/2012, 4:05 PM

BBhatt Joined 4/5/2012 Last visit: 4/5/2012 Posts: 2 Rating:  (0)	(0)  I also have the same problem with OP77A, What is "null modem wire". Can you please give me the configuration.
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  4/5/2012, 5:10 PM

Marcjan Joined 4/22/2010 Last visit: 5/18/2013 Posts: 3190 Rating:  (295)	(0)  Hello, A null modem cable is a RS232 cable with TX and RX crossed at one end. In case off op77a you have no RS232 only RS 485. Have a look at the manual for more details : http://support.automation.siemens.com/WW/view/en/21084916 Regards, Marcjan Problem solved? Please let us know! Please no technical questions by PM, use the forum!
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