Siemens SIMATIC S7-1500/ET 200MP System Manual page 377

Glossary
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.
NTP
The Network Time Protocol (NTP) is a standard for synchronizing clocks in automation
systems via Industrial Ethernet. NTP uses the UDP connectionless network protocol.
Operating modes
Operating states describe the behavior of a single CPU at a specific time.
Organization block
Organization blocks (OBs) form the interface between the operating system of the CPU and
the user program. The organization blocks determine the order in which the user program is
executed.
Parameter
• Tag of a STEP 7 code block:
• Tag for setting the behavior of a module (one or more per module). In as-delivered state,
every module has an appropriate basic setting, which you can change by configuring in
STEP 7. There are static and dynamic parameters
Parameters, dynamic
In contrast to static parameters, you can change dynamic parameters of modules during
operation by calling an SFC in the user program, e.g. limit values of an analog input module.
Parameters, static
In contrast to dynamic parameters, you cannot change static parameters of modules with the
user program but only by configuring in STEP 7, e.g. input delay of a digital input module.
376
Automation system
System Manual, 01/2023, A5E03461182-AK