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S7-315 All led's together flashing 0,5 Hz

Created by: HMT_82 at: 11/4/2020 2:09 PM (5 Replies)

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11/4/2020 2:09 PM	Rate (0)
HMT_82 Posts: 2 Rating: (0)	Hi everyone, I coudn't reach S7 315 2pn/dp controller even not in the accessible node and ethernet node.( at Simatic Manager Menü: PLC Edit ethernet node and display accessible node) -All led's together flashing 0,5 Hz. How can i reach? ------------------------------------------------------------------------------------------ Split from S7-300 error Diagnostics.
HMT_82 Posts: 2 Rating: (0)	Last edited by: HMT_82 at: 11/04/2020 14:10:58 Last edited by: Jen_Moderator at: 11/05/2020 08:42:17 New subject after splitting
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11/4/2020 2:32 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 12/24/2025 Posts: 12472 Rating: (2722)	Hello HMT: All LEDs flashing (slow) is a sign that you have a problem with the CPU memory, generally. Very often the problem could be located in the MMC, it might be defective. Worst case, the CPU itself is defective, and must be replaced... I suggest you try the different suggestions from this discussion; the last one iproposes sending your CPU's service data to Siemens techs for evaluation, through a Support Request (link at the top of this page). That would imply that you connect to the CPU's diagnostic biffer, I hope the first suggestions allow you to reconnect with Step 7. Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 11/04/2020 14:39:50
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11/10/2020 8:32 PM	Rate (0)
j mr j Experienced Member Joined: 4/21/2015 Last visit: 12/20/2025 Posts: 61 Rating: (2)	my cpu had this problem and i repaired it HMT_82 Hi everyone, I coudn't reach S7 315 2pn/dp controller even not in the accessible node and ethernet node.( at Simatic Manager Menü: PLC Edit ethernet node and display accessible node) -All led's together flashing 0,5 Hz. How can i reach? ------------------------------------------------------------------------------------------ Split from S7-300 error Diagnostics.

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2/23/2021 11:11 AM	Rate (0)
Duris_I Diamond Member Joined: 4/28/2015 Last visit: 11/27/2025 Posts: 10970 Rating: (843)	Hello, j mr j my cpu had this problem and i repaired it HMT_82 Hi everyone, I coudn't reach S7 315 2pn/dp controller even not in the accessible node and ethernet node.( at Simatic Manager Menü: PLC Edit ethernet node and display accessible node) -All led's together flashing 0,5 Hz. How can i reach? ------------------------------------------------------------------------------------------ Split from S7-300 error Diagnostics. HOW? Pls explain.
	With best regards... Ivan Duris Flight: OMICO
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2/5/2023 3:46 PM	Rate (0)
boris007 Regular Member Joined: 2/26/2010 Last visit: 11/17/2025 Posts: 11 Rating: (0)	How? Please explain.

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2/6/2023 10:01 AM	Rate (0)
sancruz Gold Member Joined: 3/11/2019 Last visit: 12/9/2025 Posts: 1653 Rating: (322)	Hi boris007, boris007 How? Please explain. As the post is from 2020 and also previously no answer was given, I guess we will not receive any answer to this topic. But even if the cpu could be "repaired", I would recommend contacting either the technical support, or the repair center for more information. regards sancruz
	Feedback appreciated, please rate
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