Siemens 6AV6651-7KA01-3AA4 - S7-1200 + KTP400 Basic Starter Kit 6AV6651-7KA01-3AA4 User Manual
Product codes
6AV6651-7KA01-3AA4
Easy to communicate between devices
7.8 S7 communication
Easy Book
154
Manual, 03/2014, A5E02486774-AF
7.8.2
Creating an S7 connection
Connection mechanisms
To access remote connection partners with PUT/GET instructions, the user must also have
permission.
By default, the "Permit access with PUT/GET communication" option is not enabled. In this
By default, the "Permit access with PUT/GET communication" option is not enabled. In this
case, read and write access to CPU data is only possible for communication connections
that require configuration or programming both for the local CPU and for the communication
partner. Access through BSEND/BRCV instructions is possible, for example.
Connections for which the local CPU is only a server (meaning that no
Connections for which the local CPU is only a server (meaning that no
configuration/programming of the communication with the communication partner exists at
the local CPU), are therefore not possible during operation of the CPU, for example:
● PUT/GET, FETCH/WRITE or FTP access through communication modules
● PUT/GET access from other S7 CPUs
● HMI access through PUT/GET communication
If you want to allow access to CPU data from the client side, that is, you do not want to
● PUT/GET, FETCH/WRITE or FTP access through communication modules
● PUT/GET access from other S7 CPUs
● HMI access through PUT/GET communication
If you want to allow access to CPU data from the client side, that is, you do not want to
restrict the communication services of the CPU, refer to "Access protection for the S7-1200
CPU" for more information.
Connection types
The connection type that you select creates a communication connection to a partner
station. The connection is set up, established, and automatically monitored.
In the Devices and Networks portal, use the "Network view" to create the network
In the Devices and Networks portal, use the "Network view" to create the network
connections between the devices in your project. First, click the "Connections" tab, and then
select the connection type with the dropdown, just to the right (for example, an S7
connection). Click the green (PROFINET) box on the first device, and drag a line to the
PROFINET box on the second device. Release the mouse button and your PROFINET
connection is joined.
Refer to "Creating a network connection" for more information.
Refer to "Creating a network connection" for more information.
Click the "Highlighted: Connection" button to access the "Properties" configuration dialog of
the communication instruction.
See also