Version Information
Release Notes, Update information, Certifications and Frequently Asked Questions.
Concepts
Your first step into modern and powerful process visualization.
Deployment
Topics, you need to know, before using WinCC OA.
Security
Go beyond the norm in cybersecurity.
Engineering
Powerful tools for easy or complex engineering tasks.
Data Management
Classify, structure and archive your data.
Business Logic / Control
Endless possibilities in data processing for your projects.
Data Visualization
User interfaces, Trends and Reports for every purpose and device.
Southbound Interfaces
The process connection to the actual machines/sensors.
Northbound Interfaces
Your portal to the cloud or supervising systems.
Web Connectivity / Network Interfaces
Data exchange, APIs and web technologies
User Management
All about authorization, authentication and login-customization.
Availability
How to get your system uptime to the maximum.
Reporting
Create state of the art project reports without limits.
Addons
Useful tools and enhancements for special demands.
Reference Tables
Detailed and extensive content for special project adaptation.
- WinCC OA Configuration Files
  Several configuration files are used in a WinCC OA project. This chapter gives you a brief overview of the different configuration files.
- Manager options, basics
  An introduction to using the manager options available in WinCC OA.
- Internal data point types
  The overview of the internal data point types available in WinCC OA.
- Data point configs
- Data Types
  An overview of the data types available in WinCC OA.
- Driver Characteristics
  The driver characteristics overview tables.
- Driver Specific Functions
- Error Messages
  The overview of error messages available in WinCC OA.
Videos & Tutorials
Explore the capabilities of WinCC OA with our carefully selected collection of video tutorials and guides.
WinCC OA Documentation
Basic information about terms and functions within the documentation.
Disclaimer
A brief clarification of liability exclusions or legal notices.

Driver Internal Data Points

Drivers are using internal data points for configuration data and status indication.

There are driver specific internal data points (e.g. _Iec for IEC60870 driver),connection specific internal data points (e.g. _S7_Conn for classic S7 driver connections) and other internal data points (e.g. _OPCGroup for classic OPC groups).

If the driver is running it is not allowed to delete an internal DP, which is used by the driver. This is not even allowed if the DP is recreated with the same name.

A driver restart is required afterwards to reinitialize the interface to the new internal DP.

In order to support online engineering some drivers allows the deletion and recreation of internal connection DPs under certain circumstances. The drivers supporting the deletion of internal connection DP are:

Note: All addresses or other internal data points related to the deleted connection must be deleted before connection deletion.


Driver	Connection DP deletion supported	Data point type of internal connection DP	Comment
BACnet Driver	✔	_BacnetDevice
DNP3 Driver	✔	_Dnp3Station
Ethernet/IP Driver	❌	_EIPConn
IEC 61850 Driver	✔	_IEC61850_IED
IEC 60870-5 Driver	✔	_IecConnection
Modbus/TCP Driver	✔	_Mod_Plc	deleting addresses after deleting the connection also works
MQTT	✔	_MqttConnection	addresses work with reactivation, it is not neccessary to delete
OPC Client	❌	_OPCServer
OPC UA Server	✔	_OPCUAServer
PROFIsafe Driver	❌	none
S7 Driver	✔	_S7_Conn	addresses work with reactivation, it is not neccessary to delete
S7Plus Driver	✔	_S7PlusConnection	addresses work with reactivation, it is not neccessary to delete
S-Bus Driver	❌	_SBusDevice
SINAUT Driver	❌	_SinautConn
SNMP	✔	_SNMPAgent, _SNMPV3Entity