Siemens SIMATIC S7-1200 - 11.2.8 Open user communication; 11.2.8.1 Protocols

Communication
11.2 PROFINET
S7-1200 Programmable controller
System Manual, V4.2, 09/2016, A5E02486680-AK
825
11.2.8
Open user communication
11.2.8.1
Protocols
The integrated PROFINET port of the CPU supports multiple communications standards
over an Ethernet network:
● Transport Control Protocol (TCP)
● ISO on TCP (RFC 1006)
● User Datagram Protocol (UDP)
Table 11- 7 Protocols and communication instructions for each
Protocol
Usage examples
Entering data in the
receive area
Communication instruc-
tions
Addressing type
TCP CPU-to-CPU com-
munication
Transport of frames
Ad hoc mode Only TRCV_C and
TRCV
Assigns port numbers to
the Local (active) and
Partner (passive) devic-
es
Data reception with
specified length
TSEND_C, TRCV_C,
TCON, TDISCON,
TSEND, and TRCV
ISO on TCP CPU-to-CPU com-
munication
Message fragmenta-
tion and re-assembly
Ad hoc mode Only TRCV_C and
TRCV
Assigns TSAPs to the
Local (active) and Part-
ner (passive) devices
Protocol-controlled TSEND_C, TRCV_C,
TCON, TDISCON,
TSEND, and TRCV
UDP CPU-to-CPU com-
munication
User program com-
munications
User Datagram Protocol TUSEND and TURCV Assigns port numbers to
the Local (active) and
Partner (passive) devic-
es, but is not a dedicat-
ed connection
S7 communication CPU-to-CPU com-
munication
Read/write data
from/to a CPU
Data transmission and
reception with specified
length
GET and PUT Assigns TSAPs to the
Local (active) and Part-
ner (passive) devices
PROFINET IO CPU-to-PROFINET
IO device communi-
cation
Data transmission and
reception with specified
length
Built-in Built-in