Data Sheet Ovation™ OPC Connectivity Features Supports the transfer of multiple data items per request Communicates with third-party office and process control applications Executes reads and writes of process data Provides data quality code with values and time stamping Utilizes Microsoft®’s OLE / COM structure (OPC classic) or vendor-independent structures (OPC unified architecture) Introduction Emerson’s Ovation™ OPC connectivity bridges the gap between third-party Microsoft® Windows® based applications and process control systems. Dynamic process information is easily and automatically accessed using the latest standard in process data exchange, Open Platform Communications (OPC), which integrates third-party applications with the Ovation system. The OPC standard enables users to easily integrate plant data with plant analysis applications, independent of the type and source of data. OPC connectivity does not require a custom interface or driver in order for an external application to access a plant’s process control device. OPC is a real-time data interchange protocol that is based on an open standard and a consistent method of obtaining data from plant devices. OPC software is developed once and then reused by business, SCADA, workstation or custom software packages. New customized OPC client applications can be easily created because many development languages such as Visual Basic for Applications (VBA), C++ and Basic already have OPC interface routines. OPC was designed by an open foundation to meet the general needs of industry. Predefined standards allow any OPC client software to communicate with any OPC server, regardless of the device type. The OPC specification provides for future developments in technology and functionality, allowing OPC components to meet the emerging needs of industry. Page - 1 PWS_002797 [6] Ovation™ OPC Connectivity Ovation OPC Connectivity Architecture OPC exchanges information between an OPC server application and OPC-compliant software applications called “clients”. An OPC server collects data from a field device via the plant network and delivers it to the OPC client software. Ovation OPC connectivity can be comprised of a combination of the following software applications: Data access server (DA) Alarm and event server (AE) Client mapper (CM) Unified architecture (UA) Ovation OPC client/server software can be loaded onto an existing Ovation drop that has been configured to function as an OPC communicator. The software can also be loaded onto a standalone workstation depending upon the communication requirements. Ovation’s OPC software organizes process points in a tree-like structure, allowing easy access to all point information from both the client application and the end user. Data Sheet Multiple clients can connect to a single OPC data access server application. Each client interfaces with a separate instance of an OPC server object within the OPC data access server. This means each client has its own set of OPC groups and items. A dedicated graphic provides indication of communication status and other important characteristics of the Ovation OPC data access server such as security, item updates and read/write statistics. Ovation OPC Unified Architecture Server An Ovation OPC unified architecture server is a software program that runs on a Windows-based workstation or select Ovation hardware and supports OPC unified architecture standard version 1.03. The OPC unified architecture includes all OPC data access server functionality with added features such as security through encryption, user control and authorization. The unified architecture software is platform agnostic which allows for the drivers to be embedded within the Ethernet link controller module and the Ovation compact controller (Model OCC100). The Ovation OPC data access server application reads control system data by creating groups of specific process points. Ovation OPC Alarm and Event Server The OPC client mapper software determines how often the data access server checks the Ovation system for new point information and sends a message when a group point value has changed. Alarms and events are indications that something within the process requires immediate operator attention. The Ovation OPC alarm and event server is a software application which exports Ovation alarm and event information to a compatible OPC alarm and event client. Ovation OPC Data Access Server Ovation’s OPC data access server is a software program that runs on a Windows-based workstation and supports the OPC data access standards versions 3, 2 and 1. The OPC data access server receives data access requests from third-party OPC clients, providing a continuous stream of live process data. Page - 2 PWS_002797 [6] Ovation’s OPC alarm and event server software also has the optional ability to generate sequence-ofevents (SOE) and operator event messages. Status of the Ovation OPC alarm and event server can be viewed in the OPC monitoring tool which provides server and client connection information. The Ovation OPC alarm and event server supports the OPC alarm and event 1.10 standard. Ovation™ OPC Connectivity Data Sheet Ethernet link controller module or Ovation compact controller OPC Client Mapper The Ovation OPC client mapper interfaces an Ovation system to any OPC server which enables reading and writing of information between the systems. OPC’s client mapper supports OPC data access versions 1.0 and 2.0 standard specifications and can communicate to multiple third-party OPC servers. Requires license manager server software (included) The minimum Ovation software version for the OPC alarm event server is 2.4 and later Ovation OPC connectivity redundancy is achieved by installing two workstations equipped with Ovation OPC client mapper software. In the redundant configuration, one OPC client mapper workstation performs control while the other acts as a backup. If the workstation in control fails, shuts down or has some problem where it no longer functions as an Ovation client mapper workstation, the backup workstation will detect the issue and take control. Additionally, if the OPC client mapper software forcibly fails one of the workstations, the backup will take control. Technical Requirements Licenses OPC Data Access, Alarm & Event or Unified Architecture Ovation OPC applications use a license manager to limit the number of concurrent connections for process data transfer. The following OPC applications require licenses to operate: Ovation systems - A dedicated or existing Windows workstation on an Ovation network connection via driver or appropriate network interface card The operating system of the OPC server workstation must be Windows 7, 2008 server and newer The OPC unified architecture software can operate on a Windows workstation, Ovation OPC Client Workstation The operating system of the OPC client workstation must be Windows 2008 server or Windows 7 and newer Connected to the Ovation network via driver and appropriate network interface card Security Process security between the control system and an enterprise-wide LAN/WAN connection is controlled by a Cisco firewall for network/highway level security and Microsoft Windows for workstation level security. Ovation OPC data access server (based on the number of client connections) Ovation OPC unified architecture (based on the number of installations) Ovation OPC alarm and event server with license options for sequence of events and operator events ©2017-2018 Emerson. All rights reserved. The Emerson logo is a trademark and service mark of Emerson Electric Co. Ovation™ is a mark of one of the Emerson Automation Solutions family of business units. All other marks are the property of their respective owners. The contents of this publication are presented for information purposes only, and while effort has been made to ensure their accuracy, they are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or applicability. All sales are governed by our terms and conditions, which are available on request. We reserve the right to modify or improve the designs or specifications of our products at any time without notice. Page - 3 PWS_002797 [6]