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2018年4月11日 · A QMH is a wonderful, useful tool to have in your architecture toolbox. A QSM is a dead end that might have some useful corner cases, but is a bad idea in 99.9% of all use cases (maybe 100%). One last clarifying point to define my terms: the difference
2021年3月23日 · I have just finished Core 2 and I am excited about using message handlers with producer consumer loops. I want to know why I would use a QMH instead of a CMH. They both seem to do the same thing. If you look at the documentation in the templates, they both have the exact same text with the exceptio...
2023年6月5日 · Hi all, I’ve set up a QMH which controls 3 pieces of hardware (power supply, waveform generator and actuator) over VISA. I have the front panel set up and all I can control all these individually through their respective controls. Great so far. Now I would like to be able to sequence their events ...
2015年11月12日 · More specifically, I based my code heavily on the sample project "Continuous Measurement and Logging" that uses QMH template (supplied with LabVIEW 2012). The difference is that I'm using multiple subVIs for data sources, as they require different modes of communication (USB, COM, ModBUS).
2020年9月24日 · My QMH will then perform a read approximately every 200ms while still able to receive incoming messages. Incoming messages can mess up the timing. There are only two ways to tell somebody thanks: Kudos and Marked Solutions Unofficial Forum Rules and Guidelines "Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God" - 2 Corinthians 3:5
2009年3月10日 · Crunch time has now arrived and I now wish to transfer to a QMH structure. The existing code consists of sub vi's with numerous controls. I had thought that the best way I could keep track of the transfer was to get each sub vi working in isolation as a QMH version, with its own queue name, and then add it to the main.
2023年5月2日 · Hello, I am trying to learn LabVIEW QMH with multiple loops. There are no good YouTube tutorials. There are tutorials for one event handling loop and one message handling loops, but not with multiple message handling loops. So from some tutorials I made an idea and created an example myself. It's ...
2010年3月19日 · The Queued Message Handler (QMH) design pattern is a general purpose VI architecture that can be used as the basis for a wide range of LabVIEW VIs. It uses the AMC API to send and receive messages. This design pattern can be used to implement state machines, user interfaces for applications, asynchronous communication processors, as well as other tasks and system components within a larger ...
2021年3月12日 · Hello, I’m facing a problem in parallel loop communication for Queue Message Handler. For simplicity I’m giving a simple example with a VI file. VI file attached herewith. Problem: For one event how to send event value to multiple MHL loop. What I want to do: I’m explaining by taking VI file a...
2018年3月25日 · Hi everyone, I've been working in this template all this day and i'd like to get some feedback about my QMH Template. I used the QMH Template from NI (Continuous Measurement and Logging) to start, and i did some modifications to it. Are those modifications good? I'm missing something? How can i imp...
