Parameterizing The Maximum F Cycle Monitoring Time - Siemens SIMATIC PCS 7 Operating Manual

Configuring the safety program
7.8 Compiling the F-program
7.8.2

Parameterizing the maximum F cycle monitoring time

The F-CPU runs F-cycle time monitoring for every cyclic interrupt OB containing F-runtime
groups. The first time the F-program is compiled, for each cyclic interrupt OB which contains
an F-program you will be prompted to enter a value for the maximum cycle time (MAX_CYC)
that may elapse between two calls of this cyclic interrupt OB.
The default for the maximum F-cycle time is 3,000 milliseconds.
Check whether this setting is suitable for your process. Change the default if necessary.
Note
You can change the default value at the MAX_CYC input of the F_CYC_CO block in chart
@F_CycCo-OB3x whenever you wish.
You can find information about setting the F-monitoring time and response times in section
"Monitoring times and system response times (Page 133)".
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Compendium Part B - Process Safety (V8.2)
Operating Manual, 07/2016, A5E35031794-AB