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| 1/9/2009 8:02 AM | |
Joined: 5/28/2008 Last visit: 12/8/2015 Posts: 901 Rating:
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Wich software do you use? maybe you need a hotfix or else... regards manfred |
| 1/9/2009 4:38 PM | |
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Joined: 5/28/2008 Last visit: 12/8/2015 Posts: 901 Rating:
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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 |
| 1/10/2009 7:03 AM | |
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Posts: 3 Rating:
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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? |
| 1/12/2009 12:05 PM | |
Joined: 10/19/2005 Last visit: 11/30/2020 Posts: 1611 Rating:
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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, |
| 4/5/2012 4:05 PM | |
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Posts: 7 Rating:
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I also have the same problem with OP77A, What is "null modem wire". Can you please give me the configuration. |
| 4/5/2012 5:10 PM | |
Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating:
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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 |
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Problem solved? |
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| 3/12/2014 2:52 PM | |
Joined: 9/1/2005 Last visit: 5/24/2023 Posts: 4099 Rating:
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follow up question published by ajaksis split to a separte thread with the subject OP77A - It doesn't load to bootloader Best regards CS Moderator |
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