Course T314
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Extended Automation System 800xA
Chapter 5
OPC Connectivity
OPC
Connectivity
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Overview
Objectives
After this chapter you should be able to:
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Describe communication structure and data flow
Set up OPC connectivity
Verify communication (live data)
Explain the Name Uploader
Reference Documentation
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3BSE035983
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3BSE041434
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3BSE043732
IndustrialIT 800xA – Control and I/O
OPC Server for AC 800M – Configuration
IndustrialIT 800xA - System
System Guide – Technical Data
IndustrialIT 800xA – Control and I/O
Application Programming – Introduction and Design
OPC
Connectivity
OPC Connectivity
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OPC Communication
OPC Server Settings
System 800xA Settings
Check OPC Connectivity
OPC
Communication
OPC Standard
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OPC stands for OLE for Process Control.
 OLE (Object Linking and Embedding) is a
Microsoft technology for objects to interact
with each other.
 OLE is based on COM or DCOM.
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While OLE was originally designed for office
applications (e.g. Word, Excel). OPC
technology is an extension of that protocol for
industrial applications
 OPC is a group defined protocol for process
control data communication.
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OPC Data Access for real time data
 OPC Historical Data Access for historical data
 OPC Alarm and Event for event data
OPC
Communication
Structure and Data Flow
Aspect
Server
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Connectivity
Server
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OPC
Communication
Basic Rules
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The OPC Server must be installed in the same physical node as the
Connectivity Server.
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One OPC Server is allowed to subscribe to data from a maximum of 24
PM861 controllers, or the equivalent number of variables from other
controller types.
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A maximum of three OPC Servers are allowed to subscribe to Data Access
and/or Alarm and Event from one controller.
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Multiple OPC Clients can subscribe to data or event notifications from the
same OPC Server.
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A third-party OPC Client should, if possible, be installed on the same PC as
the OPC Server.
OPC
Communication
Afw OPC Service model
Aspect
Directory
800xA
Clients
Client/Server
Network
Afw OPC Service
Service Group
Service
Provider
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redundant
Connectivity
Servers
AC 800M
controllers
Service Group
Service
Provider
Service
Provider
Service
Provider
redundant
Connectivity
Servers
Controller XXX
OPC
Communication
OPC Service
OPC Client: Service Structure
800xA
Clients
Aspect
Server
OpcDA Connector, Service
Event Collector, Service
1 Service Group for each CS or CS-pair
1 Service Group for each CS or CS-pair
Service
Provider
ex. CS1/2
Service
Provider
ex. CS2/2
Service
Provider
ex. CS1/2
Client/Server
Network
OPC Server
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Connectivity
Server
Control
Network
AC 800M
controller
DA
AE
Data Access
Alarm & Events
Service
Provider
ex. CS2/2
OPC
Connectivity
OPC Connectivity
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OPC Communication
OPC Server Settings
System 800xA Settings
Check OPC Connectivity
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OPC Server
Settings
Setup DA and AE Access
OPC Server
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Settings
Load Configuration Automatically
OPC
Connectivity
OPC Connectivity
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OPC Communication
OPC Server Settings
System 800xA Settings
Check OPC Connectivity
System 800xA
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Settings
Check OPC Data Access Settings (1)
System 800xA
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Settings
Check OPC Data Access Settings (2)
System 800xA
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Settings
Check OPC Alarm and Event Settings (1)
System 800xA
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Settings
Check OPC Alarm and Event Settings (2)
System 800xA
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Settings
Check OPC Alarm and Event Settings (3)
OPC
Connectivity
OPC Connectivity
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OPC Communication
OPC Server Settings
System 800xA Settings
Check OPC Connectivity
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Check OPC
Connectivity
Check Control Object Properties
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Check OPC
Connectivity
Good OPC Connection
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Check OPC
Connectivity
Bad OPC Connection
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Check OPC
Connectivity
Check the System Services
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