Hello everyone, I am looking to transfer the program from my CPU317TF-2 DP to my PC by connecting to CP 343-1 Advanced, which has LAN ports while the CPU does not. They are both installed in the same rack, with the CPU in slot 02/03 and the CP in slot 4. Since the CPU does not have LAN connectivity, its IP address cannot be displayed, as it only uses a Profibus cable for communication. Currently, I am encountering an error message stating that "Downloading the configuration is only possible via a CPU...." with only the CP address showing up. I believe it is possible to back up data from the CP in this scenario, as I have done it previously, although I cannot recall the exact steps due to being preoccupied with resolving the issue. I have also attempted using an MPI cable, but I am receiving a different error message stating, "Online: The local MPI address for the programming device/PC is higher than the maximum node address or the wrong transmission rate or wrong interrupt is set." The address is currently set to 0 and the transmission rate is 185kbs. I would appreciate any assistance in resolving these connection problems. Thank you.
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Hey there! It seems like you have quite a complex situation on your hands. To start, the error "Downloading the configuration is only possible via a CPU" is likely popping up because the CPU is the main module, so any configurations need to be done via that. The CP is more of a communication module and not primarily for configuration or programming tasks. In regards the MPI cable error, that typically indicates a configuration mismatch. While the address being set to 0 and the transmission rate at 185kbs seems fine on paper, I would recommend checking the other parameters, such as the target MPI, baud rate, and maximum nodes, to ensure they match the project settings in your Step 7 environment. MPI and Profibus configurations can be a bit tricky, so it might not hurt to go through all the settings thoroughly. Lastly, I would advise referring to any manuals or guides you have on hand for your specific Siemens devices. They often break down the process for these more nuanced problems and could help jog your memory on how you've solved this in the past. Good luck!
It sounds like you're dealing with a complex connectivity issue. With regard to backing up data from the CP, it's entirely possible, albeit a bit intricate. Taking into consideration your current issues, it might be that the MPI address or the transmission rate in your configuration settings aren't set up correctly. Since the error message states that the MPI address is higher than the maximum, I suggest adjusting the local node address within the allowed limits. Also, ensure that your transmission rates for both devices are matching to avoid any conflict. Remember, the CP 343-1 Advanced and the PLC have to be on the same network for successful communication. I hope this helps point you in the right direction!
Hey, sounds like you're navigating a bit of a tricky situation there. For the CPU317TF-2 DP, it seems that the transfer has to be via a PROFINET interface as it doesn't have a LAN port. Since you've got a CP 343-1, which is designed for connecting Simatic S7-300 to industrial Ethernet, I believe it should work. Be cautious about your MPI cable connectivity though, a lower station address might help, say, around address 2 or 3, not zero. You might also want to validate your cable is in perfect condition or try a different one. And for the transmission rate, typically 187.5kbs is the standard one for most MPI networks, you might want to try that too. I hope these suggestions get you closer to the solution.
It sounds like a tricky situation, but I think you might want to double-check your MPI settings on both the computer and the CP. Try setting your MPI address on the PC to something like 2, since 0 can sometimes cause conflicts. Additionally, ensure that the transmission rate on your programming device matches the one configured in the CPU - 187.5 kbs is common for older setups, so you might want to try adjusting that. Also, make sure your Profibus configuration is correctly set up, as any mismatch can throw communication errors. Good luck, and I hope this helps get you back on track!
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Answer: Answer: To transfer the program, you need to ensure that the CP 343-1 Advanced is configured correctly. Check the settings for both devices, such as IP addresses, communication protocols, and connection methods.
Answer: Answer: This error message indicates that the current setup might not be allowing direct configuration download from the CP 343-1 Advanced. Verify the configuration settings and make sure the communication setup is correct.
Answer: Answer: Check the MPI cable settings, such as the transmission rate and addresses. Ensure that the settings match the requirements of both the CP 343-1 Advanced and the programming device/PC to establish a successful connection.
Answer: Answer: Yes, it is possible to back up data from the CP 343-1 Advanced even without LAN connectivity on
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