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dear

attached picture for universal test machine

it is seemingly that this machine cannot be interfaced to computer 

we need this interface to visualized data

so can you suggest or guide me any DAQ or controller to override such problem

 

 

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Attempting to add a channel (Ch8) to an existing task which already uses that channel as a result of having already assigned its paired differential channel (Ch0) results in that channel correctly not being added to the task but also does not generate a warning or error.  Thus when attempting to configure a task with 2 channels as Ch0 differential and Ch8 RSE, the resulting task only contains 1 channel.  This may be not be apparent because the channels 0 and 8 appear as different from each other.  Having a warning could give notification of this fact. 

 

https://knowledge.ni.com/KnowledgeArticleDetails?id=kA00Z0000019KxoSAE&l=en-US

 

I'd like to expose an opportunity to make FlexLogger easier to use around shunt calibration. With various internal shunt calibration resistors between different hardware, is there a way that the software would know the appropriate location and resistance value when performing a shunt calibration? It is tedious, and a possible point of error, having to manually enter, for example, the correct shunt resistor between using our 9236 cards and the strain based FieldDAQ units.

The use of NI DAQmx Global Virtual Channels is the best way that I have found to configure and manage parameter scaling to provide measurement data directly in engineering units. The software architecture of our data acquisition applications is centered around the use of Global Channels (aka Virtual Channels). Configuring Global Channels using NI MAX (Measurement & Automation Explorer) is convenient for a small number of measurement channels. However, in system configurations with hundreds of channels, to create and manage them effectively, you need to build your own application for this task.  We have built custom Global Channel creation VIs in LabVIEW for each type of analog input or sensor type that we use. These VIs are designed to read a configuration table in CSV format, and then loop through creating a Global Channel for each table row of information.  This process allows for more flexibility in naming the channels as well as setting different scaling and storage of other channel-specific metadata.

 

We employ multiple networked data acquisition systems with Linux-based NI controllers, and we manage those DAQmx Global Channels across our network.  Currently, to create DAQmx Global Channels on these systems, we must directly connect to the NI controller in the LabVIEW Project View and run our suite of Global Channel creation apps on that particular controller using their accompanying, locally-stored CSV configuration file.  Currently, our networked distributed data acquisition system has grown to 10 controllers, each with their own set of common I/O.  The creation of those Global Channels has now become cumbersome because we have five I/O types to manage and hence five custom LabVIEW applications each with a specific configuration file to run on 10 controllers individually.

 

A potential simplification to the process would be to run our custom LabVIEW applications on a Windows host PC and create the DAQmx Global Channels remotely.  That would eliminate the need to directly connect to each controller from the LabVIEW Project View and copy a common set of config files to each controller and run the same applications on individually on each controller.  However, the current version of DAQmx makes no provision for remotely creating DAQmx Global Channels.  Note that NI-MAX is able to create DAQmx Global Channels remotely, but this functionality is not exposed for LabVIEW programmers to utilize.  My idea/suggestion is that NI make this functionality available in LabVIEW.

It would be great if there is c series CAN interface module which doesn't need an external power supply. This makes it easy to use and saves time to set up because we don't have to find or prepare an additional power source.

While using NI USB-6008/6009, I am encountering a strange error which I have failed to find the source of it. As you can see, there are 2 types of outputs. When I comment out one of the outputs, other one works fine. However, when I use them both, it gives me an error as shown below in the picture. What could be the problem?
Error : Invalid data format for digital channel
However, error direct to analog output.Error.JPG

There's no option to cancel changes made to a channel in FlexLogger. If I edit or change a series of parameters, but want to revert to the previous settings, there is no option to do so. I then need to re-enter what was there (and hope I don't forget what it was), or mash Ctrl+Z and hope I undo the correct number of steps.

 

MichaelBalzer_0-1620804223622.png

 

(Also pressing Esc on this window should perform a cancel operation and close the window).

We own mutliple cDAQ chassis: some with integrated controllers (913x) and some without (9188, 9189).

 

Sometimes all chassis without integrated controllers are used, and only chassis with integrated controllers are available.

 

In such cases, it would be nice to use a chassis with integrated controller just as normal cDAQ Ethernet chassis.

 

Maybe NI could make that possible by a upgrading the 913x Firmware?

Hi

So I have a cRIO with a 9203 mA input module. I also have sensors etc that are 4-20mA. So when it came to using the scaling feature of the shared variable as below see if you can spot the bug. 

sv1.png

So I was thinking in mA from sensor to mA input to the 9203 which is a mA module - but the RAW scale is in Amps! (Which is obvious once your colleague points it out!) Consequently I wasn't seeing any signal readings from the cRIO as 20mA << 4A. 

 

Since there is an error if you get Full and Zero around the wrong way... can there also be an error or warning if its outside the range of the module? 

 

sv2.pngsv3.png

 

Regards

Nick

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In order to synchronize multiple cDAQ-9189 with a computer running Windows and DAQmx, may it be possible to get a PCIe card which can act as GranMasterClock for TSN networks?

DAQmx allows to register dynamic events , but how about NI-Scope, NI-Fgen , ....   if you have an event you can route to something in hardware it should be possible to register it also as an dynamic event in LabVIEW.

 

Hi,

 

it would be really nice to be able to set user defined scalings in MAX and daqmx-tasks.

It's possible to do this in common analogue input module like NI-9203, NI-9205 and so on, but I miss this option in NI-9212, NI-9217 and so on.

 

The goal is to set a calibrated scaling to several sensors to get best results and accuracy.

 

Thanks for upvoting my idea!

Yves

Hi,

 

I was suggested to post the issue with nidaqmx not supporting the upcoming version 3.9 of Python in this group. Here is my original post: https://forums.ni.com/t5/Multifunction-DAQ/Deprecation-warning-for-nidaqmx-using-Python/m-p/4051990/highlight/true#M99324

 

In short this is the warning currently seen:

DeprecationWarning: Using or importing the ABCs from 'collections' instead of from 'collections.abc' is deprecated since Python 3.3, and in 3.9 it will stop working

 

... it doesn't seem like an issue that would require a large effort to solve, so I hope this will be prioritized accordingly.

 

BR Jesper

 

 

Hello,

 

NI should provide input for DAQmx Create Virtual Channel.vi to set default value for output channel after task starts.

Also, Provide default value in NI-MAX task configuration panel.

 

BR & Stay Healthy, 

Hello,

 

Some of application needs voltage level of 3.3 V, 2.5 V & 1.8 V. (Low Voltage IC families).

In this case we need to operate digital/counter output at desire voltage level.

It will be good if NI provide it.

Also, with reference to following link,

https://forums.ni.com/t5/Data-Acquisition-Idea-Exchange/0-PWM-duty-cycle-with-DAQmx/idi-p/3819545

PWM output can be set to 0% duty cycle (Idle Low) & 100% duty cycle (Idle High).

 

BR & Stay Healthy

Hello All,

 

I would like to know that, why XNET sessions can not be configure in NI-MAX?

It will will be great, if developer can create session in MAX, and use in VI like DAQmx tasks.

 

BR,

Aniket Gadekar. 

After consulting the community and raising a ticket with NI’s support team, we have determined that there is no good way of programmatically removing old or disconnected remote systems.

DeleteDisconnectedSystems.png

I propose that Ni Sys Config pallet be expanded to include a “Delete Disconnected Systems”. This would clear MAX’s cache of disconnect remote systems. Just like the manual method available through MAX.

It would be great if NI offered something similar to the PLC world in the form of expandable IP20 I/O slices that don't require a chassis. It could offer the same kind of functionality in the modules that the CompactDAQ line offers, but without the need to lock into a chassis. I've found myself leaning towards using PLC I/O for some projects where the end-state is a bit murky, but the programming gets really awkward when using third-party APIs like PVI.

The interface to the PC could be similar to that of a cDAQ chassis: USB or Ethernet. Given the applications of most slice I/O users, 24 VDC would be the preferred way to power such a system.

The vi "DAQmx Tristate Output Terminal (VI)" lacks an input to toggle the drive state of the output.

Current version can only tristate - not enable the output. It is rare that you don't need both options.

 

Tri-state DAQmxTri-state DAQmx

 

Without the enable option, it is a superfluous VI which only does half the job.

 

A workaround is straightforward using the technique here https://forums.ni.com/t5/Example-Programs/DAQmx-Digital-I-O-Toggling-Tristate-on-Individual-Lines-in-the/ta-p/3528571?profile.language=en 

tri.png