Siemens SIMATIC S7-1500 System Manual page 380

Glossary
Interface module
Module in the distributed I/O system. The interface module connects the distributed I/O
system to the CPUs (IO controllers) via a fieldbus, and prepares the data of the I/O modules.
Interrupt
The operating system of the CPU distinguishes between various priority classes that control
the execution of the user program. These priority classes include interrupts such as hardware
interrupts. When an interrupt occurs, the operating system automatically calls an assigned
organization block. You program the required reaction in the organization block (for example
in an FB).
Interrupt, cyclic
The CPU generates a cyclic interrupt periodically within a parameterizable time grid and then
processes the corresponding organization block.
Interrupt, diagnostics
Diagnostics-capable modules signal detected system errors to the CPU using diagnostics
interrupts.
Interrupt, hardware
A hardware interrupt is triggered by interrupt-triggering modules following a certain event in
the process. The hardware interrupt is signaled to the CPU. The CPU then processes the
assigned organization block according to the priority of this interrupt.
Interrupt, time-delay
The time-delay interrupt is one of the program execution priority classes of SIMATIC S7. The
time-delay interrupt is generated upon expiration of a timer started in the user program. The
CPU then processes the corresponding organization block.
Interrupt, time-of-day
The time-of-day interrupt is one of the program execution priority classes of SIMATIC S7. The
time-of-day interrupt is generated based on a specific date and time. The CPU then processes
the corresponding organization block.
Interrupt, update
When it receives an update interrupt, the operating system calls the update interrupt OB. This
may happen if you changed a parameter on a slot of a device.
IP address
The IP address is made up of four decimal numbers with a range of values from 0 through
255. The decimal numbers are separated by a dot (for example 192.162.0.0).
The IP address consists of the following:
• Address of the network
• Device address (PROFINET interface of the IO controllers/IO devices)
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S7-1500R/H redundant system
System Manual, 11/2022, A5E41814787-AD