Glossary
Automation system
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System Manual, 12/2017, A5E03461182-AE
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
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 (e.g. 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)
Isolated modules
In the case of isolated input/output modules, the reference potentials of the control and load
circuits are galvanically isolated, e.g. by means of optical isolators, relays or transformers.
Input/output circuits can be connected to common potential.
Load current supply
Supply of the module's input and output electric circuits.
MAC address
Every PROFINET device is assigned a worldwide unique device identification before it
leaves the factory. This 6-byte long device identification is the MAC address.
The MAC address is divided into:
●
3-byte manufacturer identification
●
3-byte device identification (consecutive number)
The MAC address is generally shown on the front of the device.
Example: 08-00-06-6B-80-C0
Non-isolated modules
In the case of non-isolated input and output modules, the reference potentials of the control
and load circuits are electrically connected.
Summary of Contents for Simatic S7-1500/ET 200MP
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