Profinet - Siemens SIMATIC S7-1200 Manual

Use the IP_CONF instruction to change the IP configuration parameters from your user
program. IP_CONF works asynchronously. The execution extends over multiple calls.
PROFIBUS instructions
The DPNRM_DG (read diagnostics) instruction reads the current diagnostic data of a DP
slave in the format specified by EN 50 170 Volume 2, PROFIBUS.
Distributed I/O instructions for PROFINET, PROFIBUS and GPRS
You can use the following instructions with PROFINET, PROFIBUS, and GPRS.
● Use the RDREC (read record) and WRREC (write record) instructions to transfer a
● Use the RALRM (read alarm) instruction to read an interrupt and its information from a
● Use the DPRD_DAT (read consistent data) and DPWR_DAT (write consistent data)
7.5

PROFINET

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 7- 2 Protocols and communication instructions for each
Protocol Usage examples
TCP CPU-to-CPU
communication
Transport of frames
ISO on TCP CPU-to-CPU
communication
Message
fragmentation and re-
assembly
Easy Book
Manual, 11/2011, A5E02486774-04
specified data record between a component, such as a module in a central rack or a
distributed component (PROFIBUS DP or PROFINET IO).
DP slave or PROFINET IO device component. The information in the output parameters
contains the start information of the called OB as well as information of the interrupt
source.
instructions to transfer a maximum of four continuous bytes using load instructions that
access the DP standard slave or PROFINET IO device.
Entering data in the
receive area
Ad hoc mode
Data reception with
specified length
Ad hoc mode
Protocol-controlled
Easy to communicate between devices
Communication
instructions
Only TRCV_C, and
TRCV
TSEND_C, TRCV_C,
TCON, TDISCON,
TSEND, and TRCV
Only TRCV_C and
TRCV
TSEND_C, TRCV_C,
TCON, TDISCON,
TSEND, and TRCV
7.5 PROFINET
Addressing type
Assigns port numbers to
the Local (active) and
Partner (passive)
devices
Assigns TSAPs to the
Local (active) and
Partner (passive)
devices
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