Product Overview; New Functions - Siemens SIMATIC S7-1500 Equipment Manual

Product overview

3.1

New functions

This section contains an overview of the most important new firmware functions of the CPU
compared to the predecessor CPU (V2.9).
New functions of the CPU in firmware version V3.0
New functions
Communication of the CPU
SNMP network manage­
ment protocol
OPC UA server – Reading
the diagnostic status of
the own address space
OPC UA server – Time
stamping of the source
time of nodes
OPC UA server – Increase
of the configuration lim­
its
Web server of the CPU
New Web API methods
Dynamic management of
certificates
CPU 1516T-3 PN/DP (6ES7516-3TN00-0AB0)
Equipment Manual, 11/2022, A5E40898375-AC
Applications
A simple configuration option is available for
using SNMP services. For new configurations,
this is disabled by default in line with "Security-
by-Default".
By using the OPC UA instruction for reading
("OPC_UA_ReadList"), the own namespace of
the OPC UA Server can be accessed.
This allows you to read out the following
statuses and react to them in the user program:
• Status of the own OPC UA server
• Status of the connections of OPC UA clients
• Status of the session
• Status of subscriptions
By using the OPC UA instruction for writing
("OPC_UA_WriteList"), it is possible to change
the "SourceTimestamp" as well as the status
code of an OPC UA variable (node).
The following configuration limits have been
increased:
• Possible number of nodes in the server
interface
• Maximum possible number of subscriptions
per session
• For subscription, the recommendation for
monitored values was increased
Many new API methods extend your access
options to the CPU via the Web API.
The web server certificate for HTTPS communic­
ation can now also be managed via the OPC UA
GDS mechanism, without separate download of
the hardware configuration.
Customer benefits
Can be enabled/disabled in the CPU properties.
Community strings are configurable.
In this way, connection problems can be quickly
detected, for example, and the plant availability
can be increased.
Distinction between the "source" and "server" time
possible
Further applications for CPUs as OPC UA servers
Additional applications for the web server
Flexible certificate management
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