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communication Damage with s7 400 profibus

Created by: Loret at: 10/22/2013 12:27 PM (8 Replies)

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10/22/2013 12:27 PM	Rate (0)
Loret Experienced Member Joined: 8/8/2012 Last visit: 1/17/2025 Posts: 34 Rating: (0)	Dear All I have s7 400 plc, connected to operating panels and other modules, one panel was not showing any alarm or any response from the plc, as I usually checking the communication, by going to simatic manager -> accessible points, all station were good except this OP is not shown, hence I replace it by other OP second hand, after I get tired by transferring the data to the OP(which is OP37) the op is working good for one day, then the communication lost, I cannot see this OP from the accessible points again, Please help me to know why these things happened, and how to repair. Knowing that I have changed the profibus connectors, and profibus cable, but the problem still remaining. Please advise me, Regards Loret
	Last edited by: O_Moderator at: 10/22/2013 1:38 PM Last edited by: Loret at: 10/22/2013 12:51 PM Last edited by: Loret at: 10/22/2013 12:49 PM
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10/23/2013 7:53 AM	Rate (0)
Nelliyan randy Posts: 461 Rating: (29)	Check for any power probelm for ur OP...just a suggestion..Keep it always on ,without power off to observe results.. Every time when ur losing the connection check whether the OP has the CPU address u already configured or any change in that... Regards, Nelliyan.G
Nelliyan randy Posts: 461 Rating: (29)
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10/23/2013 8:33 AM	Rate (0)
Loret Experienced Member Joined: 8/8/2012 Last visit: 1/17/2025 Posts: 34 Rating: (0)	Thank you Nelliyan, I have followed your instruction, the OP (op37) is restarting by itself every like 2 minutes, I have made overall reset, just as effort to solve the problem but no way. any idea please help regards

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10/23/2013 8:51 AM	Rate (0)
Nelliyan randy Posts: 461 Rating: (29)	Restart in the sense,,, power restart or just OS restart.. If power restart check the power,,,, if OS then use prosave to update the OS then again download the code.. Regards, Nelliyan.G
Nelliyan randy Posts: 461 Rating: (29)
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10/23/2013 9:12 AM	Rate (0)
Loret Experienced Member Joined: 8/8/2012 Last visit: 1/17/2025 Posts: 34 Rating: (0)	it is OS restart, please explain more, what is the update, i know well with prosave, thank you Nelliyan regards

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10/23/2013 10:17 AM	Rate (0)
Loret Experienced Member Joined: 8/8/2012 Last visit: 1/17/2025 Posts: 34 Rating: (0)	i want to inform that OP37 has no this option on either prosave or protool<<<<<<<< regards

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10/23/2013 12:44 PM	Rate (0)
Nelliyan randy Posts: 461 Rating: (29)	C this link for more details regarding prosave to perform backup,restore & os update for a panel.. https://support.automation.siemens.com/WW/llisapi.dll?func=cslib.csinfo&lang=en&objid=28928853&caller=view Reset the panel to factory & then update os,, download ur code... Hope it helps Regards, Nelliyan.G
Nelliyan randy Posts: 461 Rating: (29)
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10/24/2013 11:11 AM	Rate (0)
Loret Experienced Member Joined: 8/8/2012 Last visit: 1/17/2025 Posts: 34 Rating: (0)	Ohhh, I have tryied every possible reason, no benifit, I return the original code, the OS not restarting anymore, anyway i have take off on panel(op37) and replace it with the old one and install the new code, till moment is okay, i will monitor it ony. thank you very much

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This contribution was helpful to 1 thankful Users Nelliyan randy

10/24/2013 1:09 PM	Rate (0)
Nelliyan randy Posts: 461 Rating: (29)	I suugest u to raise a Support Request..So u may get any answer or else contact your siemens partner nearby. Regards, Nelliyan.G
Nelliyan randy Posts: 461 Rating: (29)
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