10Ms Cyclic Interrupt Ob (Ob35 Or Ob38); Figure 4: Call In The 10Ms Cyclic Interrupt Ob - Siemens SIMATIC S7-300/400 Betriebsanleitung

User Manual SICLOCK DCF77 Reception Service for SIMATIC S7-300/400
3.3.2

10ms Cyclic Interrupt OB (OB35 or OB38)

In the 10ms Cyclic Interrupt organization block the function block FB77 must be
called with parameter Aufruf=0. For S7-416 and S7-417 OB38 is to be used,
otherwise OB35. Here the projected binary input must be given.
Note:
At S7-300, the Cyclic Interrupt is set by default at 100ms and must therefore be reset
to 10ms.

Figure 4: Call in the 10ms Cyclic Interrupt OB

Document order No.: 2XV9450-1AR33 Version 3.0 Page 13 of 17