
CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0)
Manual, 09/2016, A5E03461313-AD 11
New functions in firmware version V2.0
New functions of the CPU in firmware version V2.0
This section lists the new features of the CPU with firmware version V2.0.
You can find additional information in the sections of this manual.
Table 2- 1 New functions of the CPU with firmware version 2.0 compared with firmware version V1.8
You realize the data communication between
different systems, both within the process level
and on the control and enterprise levels:
•To embedded systems with controllers
•To controllers with MES systems and sys-
tems of the enterprise level (ERP, asset
systems)
•To Siemens controllers with controllers
from other manufacturers
•To intelligent sensors with controllers
Supported standard: OPC Data Access, DA.
OPC UA is a unified standard for data communi-
cation and is independent of any particular oper-
ating system platforms.
You have integrated security mechanisms on
different automation systems, for example, for
data exchange, on the application level, for au-
thentication of the user.
OPC UA servers provide 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 and can
PROFINET IO on the
2nd PROFINET inter-
face
You can operate another PROFINET IO sys-
tem on the CPU or connect additional IO de-
vices.
You use a fieldbus in the plant.
The CPU can perform fast and deterministic data
exchange as an I-device with a higher-level con-
troller (PROFINET/Ethernet) through the second
MRPD: Media Re-
dundancy for Planned
Duplication for IRT
PROFINET IO IRT enables you to realize
applications that place particularly high de-
mands on failure safety and accuracy (isoch-
ronous).
By sending the cyclic IO data in both directions in
the ring, the communication to the IO devices is
maintained even when the ring is interrupted and
does not result in device failure even with fast
update times. You achieve higher failure safety
PROFINET perfor-
mance upgrade
You can develop applications with high de-
mands on speed and clock cycles. This is
interesting for applications with high demands
Better utilization of the bandwidth results in short
reaction times.
Limitation of the data
infeed into the net-
work
You limit the network load for standard Ether-
net communication to a maximum value.
You smooth peaks in the data infeed.
You share the remaining bandwidth based on