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OPC DA Client

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产品概览

OPC DA Client 驱动和 KEPServerEX 通信平台提供了一种简单且可靠的方式来将不同的第三方 OPC DA 服务器连接到您的客户端应用程序,包括 HMI、SCADA、Historian、MES、ERP 和无数自定义应用程序。

借助 OPC DA Client 驱动和 KEPServerEX,您可以通过单一服务器接口来管理操作,因此无需了解其他第三方服务器的不同差别。

此驱动还可使 Oracle MES 和 MOC 用户将 Kepware OPC 操作及其他所有第三方 OPC 操作引入您的业务应用程序。

资源

性能

  • 提供单一可靠的连接点,以便从本地和远程计算机上的多个 OPC 服务器访问数据
  • 通过 OPC 分组(可能不同于客户端要求或允许的分组)来优化 OPC 服务器性能
  • 支持每个 OPC 服务器的连接监控和重新连接行为
  • 为不支持 DCOM 的客户端提供与远程 OPC 服务器的连接
  • 允许从不支持多个连接或无法妥善处理多个连接的客户端连接到多个 OPC 服务器
  • 允许使用客户端支持的不同接口(如 DDE、Wonderware SuiteLink、GE NIO 等)来连接到 OPC 服务器
  • 支持例外更新(监视器)
  • 自动导入 OPC 服务器项

协议

  • OPC Data Access (DA)

支持的设备

  • OPC DA Servers: 1.0 and 2.0

可用语言

  • 英语

应用程序支持

  • DDE Format CF_Text and AdvancedDDE
  • NIO Interface for iFIX
  • OPC .NET Service (OPC .NET) Version 1.00
  • OPC Alarms and Events (OPC AE) Version 1.10
  • OPC Data Access (OPC DA) Versions 1.0a, 2.0, 2.05a, and 3.0
  • OPC Unified Architecture (OPC UA) Version 1.02
  • SuiteLink and FastDDE for Wonderware

发行说明

6.5.829.0

2018/6/19

  • Resolved a memory leak.
  • Fixed an issue where the driver would fail to read/write if callbacks failed even if the driver was configured for synchronous reads and writes.

6.3.273.0

2017/9/27

  • 改善了使用“浏览导入项”对话框折叠/展开/导入项时的性能。
  • 解决了以下问题:连续写入相同值可能导致标签低质。

6.2.506.0

2018/6/11

  • UI import items performance improvements.
  • Added an enable/disable box to controls whether an explicit read occurs after a write.

6.2.429.0

2017/6/8

  • 解决了使用 OPC DA 1.0 在 OPC DA Client 中加载项目时的崩溃问题。

6.1.655.0

2018/6/11

  • Added an enable/disable box to control whether an explicit read occurs after a write.

6.0.2206.0

2018/6/11

  • Fixed an issue where both the client and server were deleting the same memory in 1.0.

6.0.2107.0

2016/11/15

  • 解决了以下问题:删除无效项可能导致运行环境故障。

5.21.235.0

2018/6/11

  • Added OPC DA 3.0 support.

5.21.114.0

2017/3/20

  • 增强了驱动程序,以支持 DA 3.0 浏览。
  • 解决了以下问题:删除无效项可能导致运行环境挂起。

5.21.112.0

2016/8/16

  • Refactored how the driver re-adds failed items. When items were continuously added and removed by the client where at least one of the items was invalid, it could lead to “Bad” quality of valid items and instability of the runtime.

5.20.396.0

2016/5/3

  • Enabled 64-bit data type support (LLong, QWord).
  • Added support for OPC Item Access Path using $ symbol for delimiters.
  • Enhanced the driver to allow OPC DA Read and Write methods (Asynchronous or Synchronous) based on the Update Mode of the OPC Group. Asynchronous Read and Write methods are the default and remain the optimal choice for most applications.

5.19.467.0

2015/10/20

  • Enhanced Automatic Tag Generation for a device object while one or more clients are actively connected.
  • Resolved an issue that could cause tag reads using ReadMaxAge to always read from cache.
  • Resolved an issue that could cause the client to receive a newly written value, then a stale cached value, before receiving the new value again. 

5.16.722.0

2014/10/21

  • Enhanced the OPC DA Client Driver so that it will now attempt to re-add failed items.

5.15.588.0

2014/9/23

  • Fixed an issue where the server could crash if an In-Process Server (which is a server that is a .dll not an .exe) threw an unhandled exception.

5.15.585.0

2014/7/22

  • Fixed an issue where AddGroup() calls would fail when CoInitializeEx () was called after CoInitializeSecurity ().

5.11.250.0

2013/3/5

Resolved an issue where the driver would invalidate tags if the remote server did not provide a supported data type when the item was added to the server. The driver will now wait for the first update before invalidating unsupported data types.

5.10.205

2012/11/13

  • Previously, the driver would automatically filter out the data types that it could not resolve in a browser. It will now import these tags using the Default data type, and will also post a message to the Event Log.
  • Fixed an exception that would occur when invalidating tags while unloading the driver.
  • Fixed a reconnect issue where the shutdown sink flag was not cleared.
  • Fixed an issue where valid data change events were thrown away because the driver received data change events on items before they were fully added.

5.9.170

2012/6/26

Fixed an issue in the Tag Import Browser where parent node tags would be imported even when only a child node was selected.

5.7.84.0

2011/10/24

  • Changed the default update rate from 50 milliseconds to 1000 milliseconds.

5.6.122.0

2011/7/25

  • Improved initial update performance when there is a mix of good and non-good data items from the underlying servers.

5.5.94.0

2011/2/18

  • Added support for two-dimensional arrays.

5.4.131.0

2010/10/28

  • When adding groups, the time bias is now properly initialized to zero. At this moment, this setting is not user-configurable.
  • Fixed an issue wherein the initial update was not passed on to client applications.
  • Removed the limit that prevented the creation of nested groups with depth greater than 8.

5.3.118.0

2010/6/9

  • The driver now reports a value, quality, and timestamp for invalid tags (tags that can't be added to the remote server). Previously we would keep attempting to read the tags, expecting an initial update. In the case that the tag is invalid, we won't receive an update, and should report the tag is Bad: Out of Service.
  • Improved performance of ATG.
  • The driver now removes all items from the underlying server when the DA Client's device is configured as disabled.
  • Fixed issue where the driver returned an invalid read value when an item did not receive an update from the DA Server. We now continue to process the read request until we have a valid return value.

什么是驱动?

KEPServerEX 不仅是 OPC 服务器,它还是一种适用于工业自动化和 IoT 的连接平台。只需下载 KEPServerEX,然后从包含 150 多种设备驱动、客户端驱动和高级插件的 Kepware 库中选择,以便适合您工业控制系统的独特通信要求。

驱动是一种软件组件,能够使 KEPServerEX 满足某个特定设备、系统或其他数据源的连接要求。此驱动处理 KEPServerEX 与数据源进行的所有专属通信;客户端接口处理通向监控或控制设备的应用程序的所有连接,包括支持的 OPC 连接、专属连接和开放式标准连接。

驱动可以单独或以套件形式获得授权许可。随着连接需求的发展,可以按需对其他驱动进行许可。

购买信息

OPC DA Client

此产品可通过以下套件购买:

文档聚焦

通过 KEPServerEX 创建隧道,以使用 OPC UA 在远程 OPC 应用程序中建立连接。

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