Preface
Communication
4
Function Manual, 05/2021, A5E03735815-AJ
What's new in the Communication Function Manual, Edition 05/2021 as compared to
Edition 11/2019?
What's new?
What are the customer benefits?
Where can I find the information?
Improved security for SIMATIC
PG/HMI communication
•
Allows unique identification of each PLC
based on individual certificates
•
Provides additional confidentiality protection
through encrypted communication
•
Protection of the configuration data through
individual passwords
(Page 92)
Security wizard for new PLC secu-
rity mechanisms
•
Quick and easy configuration of the new
security mechanisms of the PLC in one opera-
tion
•
Supporting information to select suitable
settings for own application
Protection of confidential configura-
Certificate management via OPC
UA
Global Discovery Server (GDS)
•
Certificate update during runtime
•
Support of CRLs
•
Access protection for certificate management
Certificate management via Global
Discovery Server (GDS) (Page 185)
Transferring CPU alarms to OPC
UA clients
•
Subscriptions allow clients to subscribe to CPU
alarms as "Alarms and Conditions" from the
OPC UA server of the CPU.
•
Program messages including associated val-
ues are made available by the OPC UA server
•
Alarms requiring acknowledgement can be
acknowledged by the OPC UA client (can be
disabled)
•
An alarm burst is displayed as "overload" and
clients can be reloaded with the refresh
method
Summary of Contents for SIMATIC ET 200AL
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