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How to not show system fault led?

Created by: avafab at: 3/29/2012 2:31 PM (6 Replies)

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3/29/2012 2:31 PM	Rate (0)
avafab Posts: 83 Rating: (1)	Hello Sirs, I have a a station in which we have removed temporary some units, but I don't want to change original "hardware configuration", in this case the CPU show the system fault because it is not able to recognize the missing units.. so, is it possible to not show the red lamp "system fault" without modifying the original hardware configuration? thank you
avafab Posts: 83 Rating: (1)
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3/29/2012 3:08 PM	Rate (0)
RugbyGuy Silver Member Joined: 1/15/2009 Last visit: 4/19/2024 Posts: 316 Rating: (40)	Perhaps you could describe your situation a little further.. Are you stating that you have removed IO from their terminations, and that the Siemens IO modules that are looking for those devices are not there, thus throwing SFs to the CPU? If so, depending on the IO type, you could get away with resisters in place. But then again, I am not completely certain of the question.
	The best location for all PCS 7 content (manuals, guides, application notes, FAQs, and videos). https://support.industry.siemens.com/cs/ww/en/view/63481413
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3/29/2012 4:26 PM	Rate (0)
avafab Posts: 83 Rating: (1)	yes the situation is like you described.
avafab Posts: 83 Rating: (1)
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3/29/2012 5:02 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 9/16/2024 Posts: 12282 Rating: (2684)	Hello avafab; You could remove ("disable", "deactivate") the slave temporarily from the DP-master's call list by using SFC12. This would block communications with the slave until you reactivate it, so you coukl not use it on the network until reactivation. Couls you live with that option? What should you pay attention to when operating a DP slave temporarily on a PROFIBUS DP network? Notes for the use of the system function SFC12 "D_ACT_DP" Enabling a disabled DP slave with SFC 12 "D_ACT_DP" Hope this helps, Daniel Chartier

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3/29/2012 5:09 PM	Rate (0)
RugbyGuy Silver Member Joined: 1/15/2009 Last visit: 4/19/2024 Posts: 316 Rating: (40)	dchartier, Thats interesting, I have not done that before. What if the scenario is if he has an AI module with 8 channels, and 3 devices are removed. Does SFC12 block communication to the individual channels or the entire AI module completely? This is good to know anyways. Thanks
	The best location for all PCS 7 content (manuals, guides, application notes, FAQs, and videos). https://support.industry.siemens.com/cs/ww/en/view/63481413
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3/29/2012 5:31 PM	Rate (1)
miami Platinum Expert Joined: 8/31/2005 Last visit: 8/20/2024 Posts: 2198 Rating: (328)	If the removed parts are in ET200 Stations you should have a look at this: http://support.automation.siemens.com/WW/view/de/29430270

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This contribution was helpful to 2 thankful Users SolutionFinder avafab

5/4/2012 9:41 AM	Rate (0)
avafab Posts: 83 Rating: (1)	Yes ET200s I followed the link and the problem is solved, I deactivated only those ET200s that are physically not connected. Thank you
avafab Posts: 83 Rating: (1)
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