Siemens SIMATIC ET 200pro Operating Instructions Manual page 147

Glossary
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. The user can program the desired reaction in the organization
block (e.g. in a FB).
Interrupt, cyclic
The CPU generates a cyclic interrupt periodically within a parameterizable time grid and then
processes the corresponding organization block.
Interrupt, diagnostic
Diagnostics-capable modules signal detected system errors to the CPU using diagnostic
interrupts.
Interrupt, hardware
As a result of a specific event in the process, interrupt-triggering modules trigger a process
interrupt and signal it 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. It is
generated after 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.. It
is generated based on a defined date (or daily) and time (e.g. 9:50 or every hour, every
minute). The CPU then processes the corresponding organization block.
Interrupt, update
If the operating system has received an update interrupt, it 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 periods (for example, 192.162.0.0).
The IP address consists of the following:
● Address of the network
● Address of the device (PROFINET interface of the IO controller/IO device)
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CPU 1516pro-2 PN (6ES7516-2PN00-0AB0)
Operating Instructions, 11/2019, A5E35873416-AC