Siemens Simatic S7-1500 Manual page 20

Product overview
2.4 Properties
Properties
CPU 1516-3 PN/DP has the following technical properties:
● Communication:
– Interfaces
– OPC UA
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CPU 1516-3 PN/DP has three interfaces. Two interfaces for PROFINET and one for
PROFIBUS.
The 1st PROFINET interface (X1 P1, X1 P2) has two ports. In addition to PROFINET
basic functionality, it also supports PROFINET IO RT (real-time) and IRT (isochronous
real-time). PROFINET IO communication or real-time settings can be configured.
Port 1 and port 2 can also be used as ring ports for the configuration of redundant ring
structures in Ethernet.
The 2nd PROFINET interface (X2 P1) has one port. In addition to PROFINET basic
functionality, its also supports PROFINET IO RT (real-time). The basic functionality of
PROFINET supports HMI communication, communication with the configuration
system, communication with a higher-level network (backbone, router, Internet) and
communication with another machine or automation cell.
Note
Special consideration when PROFINET IO communication is configured on the 2nd
PROFINET interface (X2 P1)
If you configure PROFINET IO communication at the CPU (as of FW version V2.0) on
the 2nd PROFINET interface (X2 P1) (operation as IO controller or IO device),
additional system load occurs. You can find additional information in the Cycle and
Response Times (http://support.automation.siemens.com/WW/view/en/59191792)
Function Manual.
Note
IP subnets
The IP subnets of the two interfaces must be different. This means that the subnets of
the IP addresses of the two interfaces must differ from each other.
The 3rd interface (X3) is used to connect to a PROFIBUS network. When you use the
interface as PROFIBUS DP interface, the CPU is the DP master in this case. The
CPU cannot assume the role of a DP slave.
With OPC UA, data is exchanged via an open and vendor-neutral communication
protocol. The CPU, as OPC UA server, can communicate with OPC UA clients such
as HMI panels, SCADA systems, etc.
CPU 1516-3 PN/DP (6ES7516-3AN01-0AB0)
Manual, 09/2016, A5E03461313-AD