Technical data

Table Of Contents
Open Communication via Industrial Ethernet
System Software for S7-300/400 System and Standard Functions - Volume 2/2
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CPU Dependencies for Connection Types
The following list specifies which connection type you can use for which CPU:
connection_type=B#16#11 (TCP native): CPUs 31x-2 PN/DP as of firmware
version V2.4, WinAC RTX as of V4.2 (WinAC RTX 2005)
connection_type=B#16#12 (ISO on TCP): CPUs 31x-2 PN/DP as firmware
version V2.4, S7-400 CPUs (without CPU 414-4H and CPU 417-4H) as of
firmware version V4.1
connection_type=B#16#01 (TCP native, compatibility mode): all CPUs 31x-2
PN/DP, WinAC RTX as of V4.2 (WinAC RTX 2005)
For information on the number of possible connections, please refer to the
technical data for your CPU.
Establishing a Connection
The establishment of an active connection must be initiated by a communications
partner A. The establishment of a passive connection must be initiated by a
communications partner B. If both communications partners have initiated the
establishment of a connection, the operating system can completely establish a
connection.
In the parameters for the connection, you specify which communications partner
activates the establishment of a connection and which establishes a passive
connection upon request of the communications partner
See also:
Examples of Parameters for Communications Connections