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OPC Alarms & Events
OPC Alarms & Events (brief OPC A&E) is in addition to the Data Access another standard in order to implement a central alert management manufacturer spanning. OPC A&E is used to guarantee the coupling with other control systems as well as to display alerts and events in a hierarchical system
Internal data points of the OPC A&E server

Drivers
- Supported Platforms of the main Drivers
- Driver Characteristics
  The driver characteristics overview tables.
- Driver Specific Functions
- BACnet Driver
  BACnet (Building Automation and Control Networks) is a normed protocol for building automation and was designed by ASHRAE (American Society of Heating, Refrigerating and Air-Conditioning Engineers) in order to provide a consistent and intraoperative standard for data communication in and with systems of building automation.
- Cerberus Driver
- DNP3 Driver
  The WinCC OA DNP3(Distributed Network Protocol 3) driver uses an open, robust and modern protocol, which has similar characteristics and strong points like the IEC Driver. The transmission of any number of telegrams with different data types occurs between the WinCC OA system (master) and the outstation (slave).
- Ethernet/IP Driver
  Ethernet/IP is used to communicate with multiple generations and families of Rockwell Automation / Allen Bradley PLCs. It is an application layer protocol, layered on top of standard TCP/IP networking.
- IEC 60870-5 Driver
  IEC drivers are standardized remote control drivers that can contain proprietary telegrams.
- IEC 61850 Driver
  IEC 61850 defines an architecture for meeting the needs of electrical substation automation.
- Modbus/TCP
- MQTT
  MQTT (Message Queuing Telemetry Transport) is a messaging protocol which works on top of the TCP/IP protocol and is meant for communication in networks with limited bandwidth.
- NTCIP Gateway
  NTCIP (National Transportation Communications for ITS Protocol) is a family of open standards for the configuration, control and monitoring of traffic control equipment (e.g. traffic lights, dynamic message signs, vehicle counting).
- OPC Alarms & Events
  OPC Alarms & Events (brief OPC A&E) is in addition to the Data Access another standard in order to implement a central alert management manufacturer spanning. OPC A&E is used to guarantee the coupling with other control systems as well as to display alerts and events in a hierarchical system
- OPC HDA
- OPC HDA Server
  The WinCC OA OPC Historical Data Access (HDA) Server is used for the exchanging of archived process data of the WinCC OA project.
- OPC Unified Architecture (OPC UA)
  OPC Unified Architecture (in short OPC UA) is the most recent OPC specification from the OPC Foundation and differs significantly from its predecessors (DA, A&E, HDA). OPC UA forms a new standard, which is completely based on a service-oriented architecture.
- OPC Driver
  OPC (OLE for Process Control) is the utilization of OLE/COM technology for process-control systems. The specifications needed for this are laid down by the OPC Foundation.
- PROFIsafe Driver
  As an application profile of PROFINET, PROFIsafe is responsible for the communication between safety devices (F-Device) and safety controllers (F-Host).
- RK512 Driver
  The WinCC OA driver RK512 is used for interfacing a programmable logic controller using the 3964R/RK512 protocol.
- S7 Driver
  The WinCC OA S7 driver is a native driver for connection to the periphery with Siemens S7 PLCs.
- S7Plus Driver
  The WinCC OA S7Plus driver uses the Siemens communication library IOMS and is meant for the communication with Siemens S7 PLCs.
- S-Bus Driver
  The WinCC OA S-Bus driver is used for the connection from SAIA PCD control devices to WinCC OA projects.
- Simulator Driver
  The WinCC OA simulator assumes the tasks of a driver without being connected to actual peripherals. This means it simulates the periphery and is able to generate values "spontaneously". It does this by passing data to the Event Manager that this manager would receive from system components during normal operation of a system. The control system functions can be tested after configuration.
- SINAUT Driver
  SINAUT (SIemens Network AUTomation) is a communication protocol for automatic monitoring and controlling of remote process stations on basis of SIMATIC S7 developed by Siemens.
- SNMP
  SNMP (Simple Network Management Protocol) is a protocol for monitoring network devices (servers, workstations, routers, switches and hubs etc.) and their functions. It allows you to administer your network.
- SSI Driver
  The WinCC OA SSI driver is used for interfacing SAT remote systems.
- TLS Gateway
  The WinCC OA TLS gateway (Technical Delivery Terms for Route Stations) is a standard for using and establishing traffic control systems on roads.

Internal data points of the OPC A&E server

There is one internal data point for the OPC A&E server in WinCC OA: _AEServer1 of the data point type _OPCAEPvssServer. The configuration of the WinCC OA OPC A&E server is saved here - see also Configuration of the OPC A&E server.

The elements of the data point type are shown in the following table.

_OPCAEPvssServer


Data point element	Type	Description
EventCategories.EventCategoryNames	dyn_string	Name of the event categories available in the server.
EventCategories.EventTypes	dyn_uint	Types of the Event categories available in the server (1=Simple Events, 2=Conditional Events).
Conditions.EventCategoryNames	dyn_string	Event Categories of the server conditions.
Conditions.ConditionNames	dyn_string	Names of the server conditions.
Conditions.AlertDps	dyn_dpId	Alert handlings that define the server conditions.
SubConditions.AlertRangeTexts	dyn_langString	Language dependent names of the sub conditions. These are read from the alert handlings. The value cannot be set by the user.
SubConditions.SubConditionNames	dyn_string	Language independent names of the sub conditions. So short, concise descriptions can be given for sub conditions.
SimpleEvents.EventCategoryNames	dyn_string	Event categories of the simple events, defined in the server.
SimpleEvents.AlertDps	dyn_dpId	Alert handlings that define the simple events.
ServerItems.DpGroupNames	dyn_string	Name of the DP group to which a server data point belongs. The DP group corresponds to the name of the condition or "OPC_AE_Simple (for Simple Events).
ServerItems.SourceItems	dyn_dpId	WinCC OA data points for the server items.