Application example: Safety Functions
A.2 Components and settings used
Fail-safe operation of the Mobile Panel 277F IWLAN
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Function Manual, 08/2008, 6AV6691-1FQ01-2AB0
3.
Open the settings by double-clicking on the F-CPU in the HW Config. You see the most
important settings in the following:
Setting
Explanation
Cyclic interrupts:
This is where you set the cycle time
for the OB 35.
Note:
If the cycle time for OB 35 is set too
high, message frames may be
missing and there may be a delay in
evaluating the "E-STOP" output of
the F_FB_RNG_n .
Set the cycle time for OB 35 slower
than the PROFINET IO time.
Protection level:
Assign a password for the safety
program.
Set the "CPU contains safety
program" check box.
All the F-blocks required for the safe
operation of the F-modules will only
be compiled with this setting on
compilation of the HW Config of
STEP 7.
