How do I set up an external location to trigger the historical buffer value record?
First, go to “Data Management” → “History Buffer” → “Trigger” → Select “PLC” (Refer to image 1)
Then, go to “General” → “Configuration” → “Control Block” → “History Buffer Sampling” → Set the register address to be triggered. Here we choose register PLC D0 as an example (Refer to image 2).
When Bit0 of the D0 register is 1, the history buffer numbered 1 will be sampled.
Image 1
Image 2