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  1. Today
  2. Hi , I am trying to remote control Boonton RTP5540 using Labview and get error as in the attached picture , error 1172. I am new to IVI drivers usage. IVI drivers were already installed. Please give any information that can lead to resolve this . Thanks in advance. Regards, Alban
  3. Yesterday
  4. If the red dot is scary, you can just drop in a "to fixed point" in there. It explains the conversion (rounding mode and overflow mode) a bit better. In this case, the output is exactly the same as the input in the same way that 16 is the same as 16.0.
  5. The red dot just indicates that LabVIEW will be coercing the data for you so whether there is a loss of information depends on what the data is being coerced from and to. For instance, if a U8 is being coerced into a U16 there isn't any loss of data but if we instead coerce the U16 into a U8 we are losing the top 8 bits of data (depending on what we know about this data this may or may not be an issue for us). FXP conversion will likely lose information because LabVIEW tries to preserver the value rather than keeping the bit value and changing the interpretation of those bits. If you attach the project you are working out of we should be able help explain what would happen for your particular case.
  6. Thanks at all, both solution works. My question is an academic question. If I connect the sine wave generator to AO port or to Multiply operator a "cast" (red dot) is used by LV. Now, I must certificated my project and the assessor could be ask something about the red dot so how I can demonstrate that I don't not loss the information ? One solution is the test as decribed by "infinitenothing" or logical approach as suggest by Jordan. Does exist the way to avoid the cast without change the HW settings? Regards
  7. Last week
  8. All of this spam was created a long time ago when the site was more vulnerable. The wiki has been locked down since then, and this should not happen again (but some get through). I deleted the first list of pages you mentioned. The uploaded images are tedious to delete because there no simple tool I've found to do it on a mass scale. Since they're not linked anywhere then they don't do much harm except use up server space. It seems you have time. So I will connect with you directly offline to give you some rights.
  9. If you are the one order the NI parts relating to motion you will receive the letter.
  10. I can't find any announcement that that NI SoftMotion, CompactRIO, or the NI 9503 will be discontinued. Where did you hear that?
  11. I don't have a canned solution for velocity profiles. I'm sure there's something nice out there. It might be possible (though, probably there's quite a bit of effort involved) to roll your own controller. You could use a 9401 to output a PWM signal to something like an H-bridge, if you're micro-stepping, you'll have to use another module, maybe a 9221, to measure the current out to the motor, etc.
  12. We are using NI Softmotion, cRIO and NI 9503 to control stepper motors now. But since NI will discontinue these products we need to look for replacement. I just want a controller which I need to send command to tell motor move for a certain distance with a pre-program acceleration, velocity profiles. Thank you for answering my question.
  13. What c-series module are you using? In the project, if you right-click the module under the FPGA target, some have the option to change their I/O between calibrated and raw. In this case raw would probably be much easier to work with.
  14. What sort of interface are you looking for? RS232? What controller are you using? PC? CRIO? Soft motion rather fancy—what sort of features do you need? Just regular acceleration, velocity profiles? Encoders?
  15. I believe if your word length is 16 bits and the integer word length is also 16 bits and mark unsigned you will have a FXP data type that will contain the UINT16 properly.
  16. Hi, I am looking for an option to replacement of NI Softmotion + Stepper modules to control 3 axis stepper motors. If anyone has experiment with this please give me an advice. Thanks in advance.
  17. Hi all, i try to generate a sinewave in FPGA (NI cRIO Platform), to do that I use the specific VI (Sine Wave Generator) for fpga to produce a sinewave in UINT16 data type. Unfortunatelly my AO module works with FXP data type (see attach) and I need to adaptd the UINT16 to AO module. A simple cast is not sufficent because I loss information, any suggestion ?
  18. Thanks a lot! Now I see - I didn't know, that there is no exact standart for it.
  19. I never use the wizard. I used the online documentation and wrote VIs by hand.
  20. The "pretty print" includes a length check, and keeps small objects compact. You can see it in the code; it's 40 characters or less, I think. This was added to improve the readability of arrays of small objects. Unfortunately, "pretty" is subjective, and it is hard to come up with simple rules that work for all possible input JSON.
  21. Drat, still not having any luck with this. I am going to see if this works in a VM.
  22. Let me, please, also ask a question regarding the toolkit. Currently to prettify JSON string, I use function Reformat.vi. But, no matter which value of "Pretty Print Levels" I set, the output is the following: { "Item":{ "Property1":{"Name":"Property1 Name","Active":true}, "Property2":{"Name":"Property2 Name","Active":true}, "UID":43, "Active":true } } But, I'd like to have it as the following (with prettified nested objects): { "Item": { "Property1": { "Name": "Property1 Name", "Active": true }, "Property2": { "Name": "Property2 Name", "Active": true }, "UID": 43, "Active": true } } Is it the expactable behavior, or some kind of bug - that somehow it does not prettify nested JSON objects... JSON itself I generate using Unflatten JSONpath Array to Object.vi function - as inputs I set JSON paths, and values - and after that, Reformat.vi is applied... Thanks a lot in advance, Sincerely, Ivan.
  23. Thanks James, Keep up the good work, it's some getting used to working with JSON in LV.
  24. Thank you very much! It works for Array Data Pointer! I used float array (Size: 16) and read the first 3 values. Thanks a lot!
  25. Oops, sorry... I didn't notice CL_RenderingDATA. This means the union is 64 bytes long. Try using a cluster of 16 SGLs, and only read the first 3 values. Or, try changing the parameter configuration: Type: Array Data type: 4-byte Single Dimensions: 1 Array format: Array Data Pointer Minimum Size: 16
  26. This is the program. It can run to CL polling measure.vi libclapi.dlCL-500A.llb
  27. Thank you very much for this kind reply. I tried this method (A Cluster that contains 3 SGL numbers, and use this cluster to to tell the CLFN how to interpret the data.).But it will show this error or the program crashed.
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