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Scheduler

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产品概览

利用 Scheduler for KEPServerEX,用户可以将来自客户端的数据请求计划移至服务器,从而在带宽有限的网络中优化客户端通信。该插件可以按照每天的时间或频率为来自多个设备的特定标签定义轮询时间表。该高级插件还让用户能够定义不需要轮询的例外时段。每个时间表都可以配置自己的优先级,以便确定在发生冲突时优先奉行哪一个时间表;服务器会相应地更新数据到客户端。

Scheduler

资源

性能

  • 从一个集中的源安排网络中数据通信的时间,以优化可用带宽
  • 禁止恶意客户端利用高扫描速率劫持网络带宽
  • 通过系统标签向本地和远程应用程序(如 HMI 和历史数据库)提供网络利用率的可见性
  • 配置多个安排项,以便在当日、当周或当月的特定期间内按特定间隔轮询设备
  • 安排来自任意设备的标签
  • 配置安排项相对于彼此的优先级
  • 通过向导或 CSV 导入/导出工具简化安排项的配置
  • 与 Kepware 的 KEPServerEX 高级插件配合使用

可用语言

  • 英语

发行说明

6.9.572.0

2020/6/2

  • Fixed an issue where some Datetime system tags were reported in local time instead of UTC on some virtual machines.

6.7.1046.0

2019/6/18

  • Resolved an issue where the Scheduler could stop working after a configuration change to a Schedule. This problem was more common when the project was complex and contained a large number of Schedules. 

6.5.829.0

2018/6/19

  • 解决了在某些情景中会忽略“不扫描”设置的问题。
  • 显示日期的系统标记现在使用 UTC 格式。
  • 修复了在将设备添加至现有计划后无法轮询的问题。

6.2.506.0

2018/6/11

  • 修改了数据类型系统标记以显示 UTC 时间。

6.2.429.0

2017/6/8

  • 提高了向日程表中添加大量新项时的性能。
  • 解决了从实时属性组中删除对象后加载 JSON 项目时遇到的问题。

6.0.2206.0

2018/6/11

  • 改进了添加项目和更新 PendingReads 系统标记时的性能。

6.0.2107.0

2016/11/15

  • Scheduler 高级插件现在呈现在统一的树状视图中,以改进可见性和编辑能力。
  • 现在可通过配置 API 服务添加、读取、更新和删除 Scheduler 配置。

5.18.662.0

2015/6/23

  • Added support for tags referenced via the Alias Map.
  • Writes to the "_Poll" tag that do not result in a demand poll now correctly fail if the schedule is disabled or already polling.
  • Added support for adding and editing a single tag for a device.
  • Fixed an issue where reading static tags with a Default data type resulted in an initial bad-quality read.
  • Added support for prioritization of reads across virtual networks by setting the channel-level Network mode to Priority mode.
  • If a client reads a scheduled tag before the schedule has requested the data from the device, the Scheduler returns an initialized time set to the current system time.
  • Fixed potential instability issues when deleting schedules actively polling.
  • If a tag referenced by a schedule is deleted, the bad quality is reported for the tag.
  • Added support for 64-bit integers.
  • Added a Daylight Saving Time Transition Behavior setting so schedules can respect the schedule interval or respect the absolute time.
  • Added support for specifying the data type for Dynamic tags using the @type syntax.
  • Disabling a schedule now disables references to tags in the schedule. This allows edits to devices and servers without deleting the schedule.
  • Schedules that contain channels with unscheduled devices are indicated with a warning to indicate there is a mix of scheduled and unscheduled devices in a channel.
  • Devices added to a schedule are automatically placed in "Do Not Scan, Demand Poll Only" mode when a tag from the device is added to a schedule. The device reverts to the previous scan mode when all its tags are removed from the schedule.
  • Added a "_SecondsInOverride" System tag to show how long a device has been in Override mode.
  • Changing a schedule's priority posts an Event Log message.
  • Added device icons to show when a device is in override, disabled, etc.
  • Added validation to CSV import to handle invalid files more gracefully.
  • Added support for a channel level statistics tag "_NextReadPriority" to show the priority of the next read. This improves troubleshooting when using priority-based Virtual Networks for drivers that support Communication Serialization.
  • Fixed instability in the configuration when double-clicking an empty Detail View.

5.17.495.0

2015/2/24

  • Added the new Scheduler Plug-In, which decouples the client scan rate from the rate at which devices are polled. The server can poll for data once a day, every five minutes, and so forth. Clients get updates from the server cache.

什么是高级插件?

KEPServerEX 不仅是 OPC 服务器,它还是一种用于工业自动化和 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,就能满足您的工业控制系统的独特通信要求。

高级插件可扩展 KEPServerEX 连接平台的功能。通过将设备中的原始数据转换为其他形式来提高数据实用性,高级插件可增强服务器的功能。

高级插件可以单独进行许可或作为套件的组成部分进行许可,还可以随着连接需求的发展按需进行许可。