DLule 
PID Controller Terminology Explained
Here’s what the terms on the PID controller screen above mean: 👍General PID Tuning Approach 👌Recommendations for PID Tuning
How to avoid losing blocks in your s7 400 plc project
Never lose plc blocks again by trying the following; First: Blocks Temporarily loaded in RAM Second: Faulty Buffer Battery Lastly; MMC Corrupt / Out of storage