Data Point Configuration - Siemens CP 1243-7 LTE Operating Instructions Manual

Configuration

4.12 Data point configuration

Certificate for logging server
If you use a logging server in your system, export the SSL certificate for the authentication of
the CP on the server.
Change certificate: Subject Alternative Name
STEP 7 adopts the properties "DNS name", "IP address", and "URI" from the parameter
"Subject Alternative Name" (Windows: "Alternative applicant name") from the STEP 7
configuration data.
You can change this parameter of a certificate inn the certificate manager of the global
security settings. To do this, select the a certificate in the table of device certificates and call
the shortcut menu "Renew". Properties of the parameter "Alternative name of the certificate
owner" changed in STEP 7 are not adopted by the STEP 7 project.
4.12 Data point configuration
4.12.1 Data point configuration
Data point-related communication with the CPU
No program blocks need to be programmed for telecontrol modules with data point
configuration to transfer user data between the station and communications partner.
The data areas in the memory of the CPU intended for communication with the
communications partner are configured data point-related on the module. Each data point is
linked to a PLC tag or the tag of a data block.
Requirement: Created PLC tags and/or data blocks (DBs)
PLC tags or DBs must first be created in the CPU program to allow configuration of the data
points.
The PLC tags for data point configuration can be created in the standard tag table or in a
user-defined tag table. All PLC tags intended to be used for data point configuration must
have the attribute "Visible in HMI".
Address areas of the PLC tags are input, output or bit memory areas on the CPU.
Note
Number of PLC tags
Remember the maximum possible number of PLC tags the can be used for data point
configuration in the section Configuration limits and performance data (Page 18).
The formats and S7 data types of the PLC tags that are compatible with the protocol-specific
data point types of the module can be found in the section Datapoint types (Page 83).
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Operating Instructions, 04/2017, C79000-G8976-C381-03
CP 1243-7 LTE