Online Monitoring of Function Blocks in Siemens Step 7

Step1:
​Open the FB that you want to monitor

Open the FB that you want to monitor

Step2:
​Select Debug>Operation from the main menue

Step 2: Select Debug>Operation from the main menu

Step 3
Select Test Operation

Step 4
Select Debug>Call Environment from the main menu

Step 5
Select Open Data Blocks and type in the Instance DB Number.

Step 6
Put the glasses on.