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Siemens SIMATIC S7-300 FM 350-1 - Page 158

Siemens SIMATIC S7-300 FM 350-1
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Operating Modes, parameters and commands
7.5 Triggering of a Hardware Interrupt
FM 350-1 Counter module
158 Manual, 05/2011, A5E03648639-01
Lost Hardware Interrupt
If an event occurs that is to initiate a hardware interrupt and the same previous event has not
yet been acknowledged, no further hardware interrupt is initiated; the hardware interrupt is
lost. This may lead to the "Hardware interrupt lost" diagnostic interrupt, depending on the
parameterization.
Default setting
No hardware interrupt is parameterized in the default setting.

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