Communications services
3.2 Communications protocols and port numbers used for Ethernet communication
Communication
Function Manual, 11/2019, A5E03735815-AH
25
The following table shows the protocols that are supported by the S7-1500 software
controller via the Ethernet interfaces assigned to Windows.
Table 3- 3 Layers and protocols of the S7-1500 Software Controller (via Ethernet interface on the Windows side)
(2) Link layer
(4) Transport
layer
DCP
Discovery and
basic configu-
Not relevant (2) Ethertype
0x8892
(PROFINET)
Accessible devices
PROFINET Discovery
and configuration
DCP is used by PROFINET to discover
PROFINET devices and provide basic set-
tings.
Connection-oriented communications protocols
SMTP
Simple mail
transfer proto-
25 (4) TCP Simple mail transfer
protocol
SMTP is used for sending e-mails.
HTTP
Hypertext
transfer proto-
col
Adjustable
1
(4) TCP Hypertext transfer
protocol
HTTP is used for communication with CPU-
internal web server. You can change the port
number to avoid conflict with other web serv-
ers on Windows.
If you want to use web server access, you
must activate the port in the Windows Fire-
ISO-on-TCP
(according to
102 (4) TCP ISO-on-TCP protocol ISO-on-TCP (according to RFC 1006) for S7
communication with PG/PC or HMI.
OUC
2
Open User
Communica-
tion
and
Secure OUC
1 ... 1999
can be used
to limited
3, 4
(4) TCP
(4) UDP
Open User Communi-
cation
(TCP/UDP)
Secure Open User
Communication (TLS)
OUC instructions provide connection estab-
lishment, connection termination and data
transfer based on the socket layer.
If you want to use OUC, you must activate the
ports in the Windows Firewall.
2000 ...
5000
recom-
4
5001 ...
49151
can be used
to limited
3, 4
To Next Page
Loading...
Need help?
General
