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Southbound Interfaces
The process connection to the actual machines/sensors.
IEC 61850 Driver
IEC 61850 defines an architecture for meeting the needs of electrical substation automation.
IEC 61850 Control Model
Details of IEC 61850 control model

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- Driver Specific Functions
- S7Plus Driver
  The WinCC OA S7Plus driver uses the Siemens communication library IOMS and is meant for the communication with Siemens S7 PLCs.
- S7 Driver
  The WinCC OA S7 driver is a native driver for connection to the periphery with Siemens S7 PLCs.
- 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 Client
  This chapter explains the most important terms and presents the steps involved in starting a functioning OPC communication. The individual points will be dealt with in more detail in the subsequent chapters.
- OPC HDA Client
  The WinCC OA OPC (OLE for Process Control) HDA client allows to query, display and save historical data from OPC HDA servers.
- 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
- 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 Driver
  Modbus/TCP is an adaptation of the serial Modbus protocol for TCP/IP communication. The Modbus/TCP driver can be used for Modbus/TCP or UNICOS at the same time.
- 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.
- 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.
- 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.
- 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.
- S-Bus Driver
  The WinCC OA S-Bus driver is used for the connection from SAIA PCD control devices to WinCC OA projects.
- SSI Driver
  The WinCC OA SSI driver is used for interfacing SAT remote systems.
- 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.
- RK512 Driver
  The WinCC OA driver RK512 is used for interfacing a programmable logic controller using the 3964R/RK512 protocol.
- SECS
  The SECS (SEMI Equipment Communications Standard/Generic Equipment Model) is a communications standard published by Semiconductor Equipment and Materials International (SEMI).
- OCPP
  The Open Charge Point Protocol (OCPP) 1.6 is a standardized communication protocol designed to facilitate interoperability between Electric Vehicle (EV) charging stations and Central Management Systems (CMS).
- 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.
- 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).
- 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.
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Details of IEC 61850 control model

IEC 61850 control model error codes

The following table lists the available control model error codes.


Error code	Description
0	No Error
1	Unknown
2	Timeout Test Not OK
3	Operator Test Not OK

IEC 61850 control model response codes


Response code	Description
50	Object has been selected
51	Operation has been canceled
100	Command successfully issued (writing ctlVal)

AddCause values

The parameter AddCause provides additional information if any enhanced mode is used. The following table lists the available AddCause values.


AddCause values	Description
0	Unknown
1	Not-supported
2	Blocked-by-switching-hierarchy
3	Select-failed
4	Invalid-position
5	Position-reached
6	Parameter-change-in-execution
7	Step-limit
8	Blocked-by-Mode
9	Blocked-by-process
10	Blocked-by-interlocking
11	Blocked-by-synchro check
12	Command-already-in-execution
13	Blocked-by-health
14	1-of-n-control
15	Abortion-by-cancel
16	Time-limit-over
17	Abortion-by-trip
18	Object-not-selected
19	Object-already-selected
20	No-access-authority
21	Ended-with-overshoot
22	Abortion-due-to-deviation
23	Abortion-by-communication-loss
24	Blocked-by-command
25	None
26	Inconsistent-parameters
27	Locked-by-other-clients

Client error codes

These error codes are written in case of an MMS error at client side, e.g. trying to pass an incorrect parameter to the TMW stack.


WinCC OA error code	TMW error code	Description
100	0	Success
101	1	NULL Server
102	2	Not connected
103	3	No connection
104	4	Flow controlled
105	5	Max services exceeded
106	6	No read data
107	7	Memory
108	8	Encoding
109	9	Bad transaction
110	10	No transactions
111	11	Connection closed
112	12	Timed out
113	13	Connection state
114	14	Application error
115	15	Bad parameters
116	16	Confirmed error
117	17	Reject
118	18	No authentication
119	19	Conclude with services outstanding

Server error codes

These error codes are written in case of an MMS error at client side.


WinCC OA error-code	TMW error code	Description
200	0	object-invalidated
201	1	hardware-fault
202	2	temporarily-unavailable
203	3	object-access-denied
204	4	object-undefined
205	5	invalid-address
206	6	type-unsupported
207	7	type-incosistent
208	8	object-attribute-inconsistent
209	9	object-access-unsupported
210	10	object-non-existent
211	11	object-value-invalid
212	12	unknown