Siemens SIMATIC S7-1500 Function Manual page 6

What's new in the Communication Function Manual, Edition 12/2017 compared to Edition 09/2016
What's new?
OPC UA Companion Specifica-
tion
Setting up a secure connection
to a mail server over the CPU
interface
Secure communication over
Modbus TCP
What's new in the Communication Function Manual, Edition 09/2016 compared to Edition 12/2014
What's new?
OPC UA server
Secure Open User Communica-
tion
Certificate handling in STEP 7
Deactivating SNMP for the CPU
Communication
Function Manual, 11/2019, A5E03735815-AH
What are the customer benefits?
Through OPC UA Companion Specification,
methods can be specified in a uniform and
manufacturer-neutral way. Using these specified
methods, you can easily integrate devices from
various manufacturers into the plant and the
production processes.
You can set up a secure connection to a mail
server without additional hardware.
You can establish secure TCP connections be-
tween a Modbus TCP client and a Modbus TCP
server.
What are the customer benefits?
OPC UA is a uniform standard for data commu-
nication and is independent of any particular
operating system platforms.
OPC UA uses integrated safety mechanisms on
various automation systems, for example with
data exchange, at application level, for the legit-
imation of the user.
The OPC UA server provides a large amount of
data:
Values of PLC tags that clients can access
•
Data types of these PLC tags
•
Information about the OPC UA server itself
•
and the CPU
In this way, clients can gain an overview of the
tag management and can read and write values.
Secure data exchange with other devices.
You can manage certificates for the following
applications in STEP 7:
OPC UA server
•
Secure Open User Communication
•
Web server of the CPU
•
You can deactivate SNMP for the CPU. This can
make sense under certain conditions, for exam-
ple if the security guidelines in your network do
not permit SNMP.
Where can I find the information?
Section OPC UA server interface
configuration (Page 199)
Section Secure OUC via e-mail
(Page 107)
Section Secure OUC with Modbus
TCP (Page 106)
Where can I find the information?
Section OPC UA communication
(Page 126)
Section Secure Open User Com-
munication (Page 92)
Section Managing certificates with
STEP 7 (Page 43)
Section Disabling SNMP (Page 57)
Preface
5