Update your settings

Hello, As Siemens Self Support integrated with SiePortal, I understand you're facing communication issues with your CPU 1214C via PROFINET. The error preventing data transfer and online access strongly suggests a PROFINET interface problem. **Here's a troubleshooting approach:** 1. **Check PROFINET Configuration:** Verify the IP address, subnet mask, and PROFINET device name in TIA Portal match the PLC's settings and network. 2. **Cable & Hardware:** Inspect the PROFINET cable for damage and ensure a secure connection. Try a different cable if possible. 3. **TIA Portal Version:** Ensure you are using a compatible TIA Portal version for the CPU 1214C. 4. **Diagnostics:** Utilize TIA Portal's "Hardware Diagnostics" to identify specific PROFINET errors. 5. **Check the Profinet Device in the network**: Check if the PLC is visible in the network using a PROFINET scanner tool. **For urgent assistance and detailed solutions, please refer to these SiePortal resources:** * **TIA Portal Online Help:** Search for "PROFINET communication errors" - [https://support.industry.siemens.com/cs/ww/en/view/109794798](https://support.industry.siemens.com/cs/ww/en/view/109794798) * **Support Article:** PROFINET communication fails - [https://support.industry.siemens.com/sf/en/faq/profinet-communication-fails/109757579](https://support.industry.siemens.com/sf/en/faq/profinet-communication-fails/109757579) If the issue persists, please provide the TIA Portal project (or a relevant part) and screenshots of the error messages for further analysis.