OB1 End of startup or end of OB1
OB10,OB11,OB12,OB13,OB14,OB15,OB16,OB17 Time-of-day interrupt (No default time specified)
OB20,OB21,OB22,OB23 Time-delay interrupt (No default time specified)
OB30,OB31,OB32,OB33,OB34,OB35,OB36,OB37,OB38 Cyclic interrupts
Cyclic interrupt 0 (default...