Number Of Asynchronous Communication Connections - Siemens SIMATIC S7-1200 Manual

7.3

Number of asynchronous communication connections

The CPU supports the following maximum number of simultaneous, asynchronous
communication connections for PROFINET and PROFIBUS:
● 8 connections for Open User Communications (active or passive): TSEND_C, TRCV_C,
● 3 CPU-to-CPU S7 connections for server GET/PUT data
● 8 CPU-to-CPU S7 connections for client GET/PUT data
● HMI connections: You can configure the number of HMI connections required for your
● PG connections: The CPU provides connections to support 1 programming device (PG).
● Web server (HTTP) connections: The CPU provides connections for the Web server.
Note
The Open User Communications, S7 connection, HMI, programming device, and Web server
(HTTP) communication connections may utilize multiple connection resources based upon
the features currently being used.
Easy Book
Manual, 03/2014, A5E02486774-AF
TCON, TDISCON, TSEND, and TRCV.
Note
S7-1200, S7-300, and S7-400 CPUs use the GET and PUT instructions for CPU-to-CPU
S7 communication. An S7-200 CPU uses ETHx_XFER instructions for CPU-to-CPU
S7 communication.
application through the TIA Portal.
Easy to communicate between devices
7.3 Number of asynchronous communication connections
131