Siemens SIMATIC S7-1200 - Page 994

Communication
11.5 S7 communication
S7-1200 Programmable controller
994 System Manual, V4.2, 09/2016, A5E02486680-AK
Table 11- 65 Connection parameter: General definitions
Parameter
Definition
Connection
parameter:
General
End point "Local End point": Name assigned to the Local CPU
"Partner End point": Name assigned to the Partner (remote) CPU
Note: In the "Partner End point" dropdown list, the system displays all potential
S7 connection partners of the current project as well as the option "unspeci-
fied". An unspecified partner represents a communication partner which is not
currently in the STEP 7 project (for example, a third party device communica-
tion partner).
Interface Name assigned to the interfaces
Note: You can change the connection by changing the Local and Partner inter-
faces
Interface type
Type of interface
Subnet name
Name assigned to the subnets
Address Assigned IP addresses
Note: You can specify the remote address of a third party device for an "un-
specified" communication partner.
Connection ID ID number: Automatically generated by the GET/PUT connection parameter
assignment
Connection name Local and Partner CPU data storage location: Automatically generated by the
GET/PUT connection parameter assignment
Active connection estab-
lishment
Checkbox to select Local CPU as the active connection
One-way Checkbox to specify a one-way or two-way connection; read-only
Note: In a PROFINET GET/PUT connection, both the local and partner devic-
es can act as a server or a client. This allows a two-way connection, and the
"One-way" checkbox is unchecked.
In a PROFIBUS GET/PUT connection, in some cases, the Partner device can
only act as a server (for example, an S7-300), and the "One-way" checkbox is
checked.
Connection ID parameter
There are three ways to change the system-defined connection IDs:
1. The user can change the current ID directly on the GET/PUT block. If the new ID belongs
to an already existing connection, the connection is changed.
2. The user can change the current ID directly on the GET/PUT block, but the new ID does
not already exist. A new S7 connection is created by the system.
3. The user can change the current ID through the "Connection overview" dialog: The user-
input is synchronized with the ID-parameter on the corresponding GET/PUT block.
Note
The parameter "ID" of the GET/PUT block is not a connection name, but a numerical
expression which is written like the following example: W#16#1