7/6/2015 9:48 PM | |
Posts: 4 Rating:
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I'm having the same kind problem with a S7 400 414-3DP - All led Flashing. Have try other CPU and it does the same. At booting, no matter if run or stop, suddenly the INTF light on steady and all other led's flashing at 0.5 Sec frequency .. then after some seconds the INTF flashing too. The Net card which was going to run, when the flashing start goes to stop. I Can't connect to CPU by any meaning, no MPI, no DP, no Lan. I have read cause can be by power supply. My quest is: when this event happen, After replacing the power supply, the CPU will operate then or are CPU damage? UPDATING: 7/7/2015 I have try to replace the power supply with a new one but the result is the same, CPU still not passing the booting diagnostic and INTF light on steady for about 10 sec. meanwhile all other led's blinking synchronized, then also INTF join all the led's to blink together. I have try the minimal configuration, PS + CPU, no change, fault to start and all led's blink. Power Supply green led +5VDC & +24 VDC are light on - incoming power supply 231 VAC 50 HZ. from a UPS unit.
---------------------------------------------------------------------------------------------------- AttachmentSaturday Test.zip (827 Downloads) |
Last edited by: Strafo at: 7/6/2015 9:51:59 PMLast edited by: Strafo at: 7/7/2015 5:48:38 AMLast edited by: Strafo at: 7/7/2015 6:05:38 AMLast edited by: Min_Moderator at: 7/8/2015 9:12:01 AMNew subject after splitting |
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7/7/2015 7:10 PM | |
Joined: 11/29/2011 Last visit: 7/17/2024 Posts: 1358 Rating:
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Hi, Have you try to reload/replace the EPROM? See this FAQ about how to reload the new EPROM: How can you write the program to the FLASH Memory Card when using a SIMATIC S7-400 CPU? Have a quick look at this thread as background: CPU all LEDs are red blinking after 3-4 hrs
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- What you read here, please check with manuals and your requirements. |
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7/10/2021 2:22 AM | |
Posts: 1 Rating:
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you change the rack slot and problem will be solve |
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