Configuring Data Points; Data Point Configuration - Siemens SIMATIC TeleControl DNP3 Configuration Manual

3.20

Configuring data points

3.20.1

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 correspondingly on the CPU 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
Observe the maximum possible number of PLC tags that can be used for data point
configuration.
The formats and S7 data types of the PLC tags that are compatible with the data point types
of the modules can be found in the section Datapoint types (Page 109).
Access to the memory areas of the CPU
The values of the PLC tags or DBs referenced by the data points are read and transferred to
the communications partner by the module.
Data received from the communications partner is written by the module to the CPU via the
PLC tags or DBs.
Configuration - DNP3
Configuration Manual, 11/2018, C79000-G8976-C508-01
Configuration
3.20 Configuring data points
103