Safety Source Address Not Valid (F_Source_Add)
ABB · AC500
What does 2 mean?
The configured PROFIsafe source address (F_Source_Add) for the safety PLC is invalid. This prevents the safety PLC from properly identifying itself to other safety devices in the network, leading to potential communication failures and a compromised safety chain. The risk is that other safety components might not correctly process data from this PLC.
Common Causes
- The F_Source_Add configured for the safety PLC in the project does not match the actual, internally assigned F_Source_Add of the PLC itself.
- Manual configuration error when setting the F_Source_Add for the safety PLC in the PLC programming software.
- A new safety PLC was installed, and its F_Source_Add was not correctly parameterized or is conflicting with another device.
- Firmware update on the safety PLC reset or changed its internal F_Source_Add assignment logic, causing a mismatch.
Repair Steps & Checklist
Click steps to track your progress.
- 1
Verify the F_Source_Add configured for the safety PLC in the PLC programming software (e.g., device properties) matches its actual source address (e.g., from diagnostics).
- 2
Ensure that the F_Source_Add is unique across the entire PROFIsafe network segment to prevent communication conflicts.
- 3
Correct the F_Source_Add in the safety PLC's hardware configuration as needed.
- 4
Recompile the entire safety PLC project and download the updated configuration to the safety PLC.
- 5
Check the safety PLC's diagnostic buffer for specific information regarding the F_Source_Add issue.