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412-2 CPU showing STOP and EXTF

9/23/2010 1:34 PM	Rate (0)
vmenon Posts: 3 Rating: (0)	after power faliure on restarting the system my 412 cpu showing STOP continously and EXTF LED glowing continously .and when i am trying to communicate with cpu trough my mpi adapter cable at mpi/dp port it showing error (that unable to establish connection with cpu ) its asking to specify slot and rack .although i gave the rack and slot its was not successful and at x2 dp port it showing no active partner found. checked my adapter cable it is working fine with other CPUs.please help regards vmenon
vmenon Posts: 3 Rating: (0)
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9/23/2010 6:41 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	programm in flash or in load RAM CPU? Have you backup battery in PS4xx?
gre_m Posts: 947 Rating: (45)	Last edited by: gre_m at: 9/23/2010 6:41 PM
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9/24/2010 8:51 AM	Rate (0)
vmenon Posts: 3 Rating: (0)	Dear gre_m the program is in FLASH an dthe batteries are already exausted it showing amber color indication when put in BATT 2 the main problem is, i am not able to communicate with the cpu...iam attaching the error which are been shown while communicating. Attachment untitled.JPG (375 Downloads)
vmenon Posts: 3 Rating: (0)
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9/24/2010 6:54 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	You make upload from Plc. Project not open or is dummy. and step7 can't determine interface for upload.Use your source projtct as base or make small project with knowncomponent such a CPU, CP,etc..., and then make upload
gre_m Posts: 947 Rating: (45)
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9/25/2010 9:37 AM	Rate (0)
vmenon Posts: 3 Rating: (0)	dear gre_m i am unable to take the back up from the CPU. is there any possibility that the program has got deleted from CPU.
vmenon Posts: 3 Rating: (0)
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9/25/2010 4:42 PM	Rate (0)
gre_m Posts: 947 Rating: (45)	Hello! I watched your screenshot. From the text "configuration cannot uploaded..." I would suggest that you try to upload a configuration from HW-config. If you want to see the existence of programs in the controller, you will need to open an existing project and open it from theSimatic managerin a mode online and available online to watch the program. If you do not program (project), you can create a test project with the samehardwareincentral Rack (UR1orUR2)and open this project in a mode online/ And in mode online see progamm blocks in the PLC
gre_m Posts: 947 Rating: (45)
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10/2/2010 6:07 PM	Rate (0)
Avinashd Member Joined: 9/25/2010 Last visit: 7/16/2025 Posts: 2 Rating: (0)	dear vmenon you can also check your PLC program withaccessiblenode option. as per my knowledge in this optionyouneed not for hardware configuration. thanks

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