Troubleshooting
Problem | Cause | Solution |
|---|---|---|
Error message in TwinCAT: "PREOP to SAFEOP failed". | Variables of different sizes in the process data objects "IO Inputs" and "IO Outputs". | Ensure that the size of the variables in "IO Inputs" and "IO Outputs" is the same. |
Error message in TwinCAT: "Invalid SM In/Out Cfg". | The variables in the process data objects "IO Inputs" and "IO Outputs" exceed 1280 bytes. | Ensure that the sum of the variables in each of the process data objects does not exceed 1280 bytes. |