與其使用變數,建議使用生產者/消費者設計模式或New Data Value Reference功能來創建對數據的引用。 將大部分程式碼分成數個subVI,然後使用 Call By Reference Node可動態調用subVI。直到VI動態調用subVI為止,subVI才占用記憶體。 盡可能將較大的subVI設置為non-reentrant。 Windows和Real-Time VI的默認設置為non-...
11. 使用功能方法 GetAttributes.vi访问属性。在LabVIEW中, G# 使用数据值调用(Data Value Reference,DVR) 访问属性。 12.请参考 G# 范例,进一步了解类如何工作。 G# Framework Examples 框架范例 G#框架范例:<LabVIEW>/examples/AddQ/G# 查找范例,在 LabVIEW “Find Examples…”中输入关键词 “G#”。 G# ...
Instead of using variables, consider using a producer/consumer design pattern or the New Data Value Reference function to create a reference to the data. Separate large sections of code into subVIs and use the Call By Reference Node to call the subVIs dynamically. A subVI is not in memory ...
[LV2009] LabVIEW does have refnum controls. The queue refnum or the new Data Value refnum controls can be used to give the private data of one class a reference to another class. Many users might expect that this technique would allow Class X to include a refnum to Class X. Technically,...
Values that are passed out of the subVI'sConnector Panearenottemporary buffers. QueuesandData Value Referencestake over memory allocation to avoid creating copies. Therefore, these do not create a temporary copy of the data that can be deallocated. ...
Figure 9. Flush Shared Variable Data.viDeployment and HostingYou must deploy network-published shared variables to a shared variable engine (SVE) that hosts the shared variable values on the network. When you write to a shared variable node, LabVIEW sends the new value to the SVE that ...
Variable Client Support 1.0.0 Broadcom 57xx Gigabit Ethernet driver 1.0.1.3.0 T5 and T6 Methodology and Considerations In test T5 and T6, NI used nonbuffered, network-published shared variables of the Waveform of Double datatype. T5 and T6 Hardware/Software Configuration ...
Back to top Additional Resources For more information on adding, rearranging, and duplicating cases in the case structure please reference tutorials in theCase Structure LabVIEW Help. Refer to the Case Structure - Selector Data Types VI in thelabview\examples\Structures\Case Structuredirectory for an...
[LV2009] In LabVIEW 2009, we introduced Data Value References. These are a new refnum data type capable of serving as a reference to any LabVIEW data, be it a plain integer, an array, a cluster or a LabVIEW object. This new addition to the language is discussed later in this document...
LabVIEW数据库连接工具包执行SQL语句是通过 DB Tools Execute Query.vi实现的,该VI可 以在函数互联接口DatabaseAdvanced面 板下找到。 Http:/ 24 数据库高级操作Delete 通过查询SQL参考手册 18、,可知删除一条记录的SQL关键字 为“DELETE”,其语法为: DELETE FROM table_name WHERE column_name = some_value ...