Click OK. LabVIEW creates a subdiagram in the Event structure. Drag the block diagram terminal for the new control inside this subdiagram. Decide what state you want to transition to as a result of the user interacting with this control and wire an enum with this state's value to the Nex...
The diagram of the Torque Hysteresis VI is implemented using the Event-Driven State Machine design pattern, comprised of a Queued State Machine with an Event structure in the Idle case. The Event structure is configured to buffer one or more states for each of the Boolean controls Value Change...
· Integration of the LabVIEW event structure with the shared variable.· LabVIEW VIs to programmatically control all aspects of shared variables and the shared variable engine. These VIs are especially helpful for managing large numbers of shared variables. Does the computing device have adequate ...
Event Structure User Interface Event Handler Producer/Consumer (Events) State Machine Parallel Loop VI Architecture Queued Message Handler Producer/Consumer (Data) Combine or Expand Architectures as Needed Event-driven Programming Tips Make sure Event Structures are always in loops to handle events Put ...
A user interacts with the front panel, causing the Event structure in the Event Handling Loop (EHL) to produce a message. LabVIEW stores the message in a queue. The Message Handling Loop (MHL) reads a message from the message queue, removing the message. The message is a string that matc...
在此选用State Machine （状态机）实现，即每一种状态执行相应的子模块，主要由一个主循环和一个Case 结构组成，利用移位寄存器实现状态的跳转。每个模块的程序都对应存放于一个Case 分支中，这样大大提高了系统的可扩展性和CPU 对各个模块处理能力。同时，也方便了后期的调试。图1为系统进行环境本底测量时的能谱...
To preserve state information across calls to a clone VI, select the Preallocate clone for each instance option on the Execution Properties page. LabVIEW Upgrade Notes 44 ni.com Conditional and Diagram Disable Structure Enhancements When LabVIEW loads a VI with user-defined objects, such as sub...
d. Using a While loop with Auto-Indexing 34. The following block diagram represents which common type of VI architecture? . a. Multiple Case Structure VI b. General VI c. State Machine VI d. ParallelLoopVI 35. Which of the following statements is true about the iteration terminal a. It...
4. The polling event (nodes in the while loop) could be put into the timeout case if you want to use event structure together with it (and the timeout shouldn’t be -1). Posted inLabVIEW|TaggedLabVIEW,mouse wheel,scroll|3 Comments ...
However, sometimes it is useful to pass a few spare wires through a Case structure, such as the state machine design patterns that are discussed in Chapter 8. This practice reduces maintenance when additional wires are needed. Be sure to clearly label unused wires as Unused, or Spare. 规则 ...