Siemens PLC organization blocks (OB) introduction 

Hello,
in this video I am going to talk about the organization blocks (OBs) in an S7-1500 PLC.
These organization blocks can only be configured using TIA Portal or SIMATIC Manager.
▬▬▬▬▬▬ Contents of this video ▬▬▬▬▬▬
0:00 - Intro
0:53 - Startup OB (OB 100)
1:35 - Main OB (OB 1)
2:03 - Time of day OB (OB 10)
2:35 - Time delay OB (OB 20)
3:04 - Cyclic interrupt OB (OB 30)
3:38 - Hardware interrupt OB (OB 40)
4:30 - Asynchronous errors
4:54 - Time error OB (OB 80)
5:15 - Diagnostics OB (OB 82)
5:45 - Pull & plug error OB (OB 83)
6:11 - Rack station failure OB (OB 86)
6:34 - Synchronous errors
6:45 - Programming error OB (OB 121)
7:05 - IO access error OB (OB 122)
7:16 - Outro