5/16/2023 11:38 AM | |
Joined: 5/16/2022 Last visit: 5/16/2023 Posts: 1 Rating: (0) |
Dear all, today i have a very strange experience with s7-300 (CPU 313C), when i Place the CPU in Rack and as soon as i powered them All light indicators start fleshes and i am unable to access my PLC hardware anymore. i had given the power cycle to the CPU and try to MRES but it does not work. kindly let me know what are the possible solutions to that. ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 05/17/2023 09:40:26New subject after splitting |
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5/16/2023 4:39 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello, This effect is called the status "DEFECTIVE" and is coming when the CPU doesn't know what to do with the situation it is in. After this message (all LEDs are blinking) you can't reach the CPU anymore until you shut down the power and switch it on again. First, you need to insert a MMC in the CPU and then power it up. If you are lucky, it won't go to this mode and will not blink all leds again. If you reached to this situation, please update the CPU FW to latest FW. In this link you can find the FW version: |
Ayman Elotaify |
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