Siemens SIMATIC ET 200AL, System Manual

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Glossary
PROFINET with STEP 7
Function Manual, 05/2021, A5E03444486-AL
325
Security
Generic term for all the measures taken to protect against
•
Loss of confidentiality due to unauthorized access to data
• Loss of integrity due to manipulation of data
• Loss of availability due to the destruction of data
Send clock
Period between two consecutive intervals for IRT or RT communication. The send clock is the
shortest possible transmit interval for exchanging data.
SIMATIC
The term denotes Siemens AG products and systems for industrial automation.
SIMATIC NET
Siemens Industrial Communication division for Networks and Network Components.
SIMATIC PC Station
A "PC station" is a PC with communication modules and software components within a
SIMATIC automation solution.
SIMATIC Memory Card (SMC)
→ Micro Memory Card (MMC)
Slave
A slave can only exchange data after being requested to do so by the master.
→ See also DP slave
SNMP
The network management protocol SNMP ( S imple N etwork M anagement P rotocol) uses the
wireless UDP transport protocol. It consists of two network components, similar to the
client/server model. The SNMP manager monitors the network nodes and the SNMP agents
collect the various network-specific information in the individual network nodes and stores it
in a structured form in the MIB ( M anagement I nformation B ase). This information allows a
network management system to run detailed network diagnostics.
STEP 7
STEP 7 is an engineering system and contains programming software for the creation of user
programs for SIMATIC S7 controllers.