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problem with bus2f

7/11/2011 2:39 PM	Rate (0)
Import-User-1 Posts: 3609 Rating: (29)	Guest hi i want to ask question about redundant system. my system has bus2f flashes on cpu and redf that is on but no flash. can you help me please?
Import-User-1 Posts: 3609 Rating: (29)
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7/11/2011 3:11 PM	Rate (0)
hdhosseini Diamond Expert Joined: 1/28/2009 Last visit: 1/5/2026 Posts: 6892 Rating: (1368)	Import-User-1 Guest hi i want to ask question about redundant system. my system has bus2f flashes on cpu and redf that is on but no flash. can you help me please? Searching the forum may also help: https://support.automation.siemens.com/WW/llisapi.dll?query=s7+400h+%2Bled&func=cslib.cssearch&content=adsearch%2Fadsearch.aspx%3Ftab%3D2&lang=en&siteid=csius&objaction=cssearch&searchinprim=_searchinprim_&nodeid=99&x=16&y=8&cssearchengine=NEW&x=0&y=0 Hulzhex Please have a look to the diagnostic Buffer of the CPU and the hardware diagnostic. There you will find informations about the status of the slaves. Hope you will find this informations using STEP 7, clicking in your project the CPU right and then I think PLC. Sorry, at home I don't have STEP 7. So I can't tell you the way exaktly. Here are links to documents how may help you to make your Hardwareconfiguration running: Automation System S7-400H Fault-tolerant Systems Programmable Controllers S7 F/FH LED error displays with H-CPUs Regards
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7/18/2011 1:05 PM	Rate (0)
Invincible Posts: 4 Rating: (0)	Hello! Solution sometimes is so simple that may not have picked your concern before. Please check the PROFIBUS connector "Bus termination" key position. Thumb role for this is "One-cable-ON" and "Two-cable-OFF". Though it is too silly thing to forget. Thanks
Invincible Posts: 4 Rating: (0)
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