Glossary
S7-300 Module data
632 Manual, 06/2017, A5E00105505-AJ
Input delay
STEP 7 parameter for digital input modules. The input delay function is used to suppress
coupled disturbance. This includes pulse-shaped disturbance within the range from 0 ms to
the set input delay
The input delay tolerance is defined in the technical data of the module. The length of
suppressed pulse-shaped disturbance is determined by the length of the input delay.
The permissible input delay is determined by the line length between the encoder and the
module. Unshielded encoder supply lines of a grater length (more than 100 m) require a long
delay setting.
Integration time
STEP 7 parameter for analog input modules. The integration time is equivalent to the inverse
value of the → noise suppression frequency in ms.
Interface, multi-point
→ MPI
Interference frequency suppression
STEP 7 parameter for analog input modules. The frequency of AC mains may corrupt
measured values, in particular in the low voltage ranges, and when thermocouples are being
used. At this parameter, the user defines the mains frequency prevailing on his system.
Interrupt
SIMATIC S7 knows 28 different priority classes which control user program execution. These
priority classes include interrupts, such as hardware interrupts. When an interrupt occurs, the
operating system automatically calls an assigned organization block, in which the user can
program the desired response (e.g. in an FB).
Interrupt, diagnostics
→ Diagnostic interrupt
Interrupt, end of cycle
→ hardware interrupt
Interrupt, hardware
→ hardware interrupt
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