Retrigger cycle time by using SFC 43

Hello everyone, I'm working on a project with a S7-300 CPU 314C-2DP. I want to retrigger the cycle time by using SFC 43. I'm not sure where I should call it on my code. I'd be thankful if someone told me whether writing "call SFC 43" in the last network of OB1 is correct or not.  

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Split from Watchdog S7-300.

Hi

You need insert it in part of OB1 before watchdog triggers.

BUT

1. ensure PLC reaction time is not too high. this may lead to dangerous situations

for example over runned limit switches, clashes, etc.

2. if You can permit longer cycle just increase max allowed cycle in HW Config.

Before using ensure safety of personnel and your system is not compromised by long

reaction time (long scan time)