On the sbRIO-9627, can you simultaneously use all 100 DIOs and all 16-channels of analog inputs? I am confused because the sbRIO-9607 has the same SoC (Zynq-7020), but only has 96 DIOs and 0 analog inputs.
↧
sbRIO-9627 simultaneous usage of all DIOs and ADCs
↧
DIGILENT DIGITAL DISCOVERY
Good evening guys,
I hope you are staying safe and happy. I recently purchased a digital discovery board for an application which is related to ADC but I was facing difficulties in recognizing the digital discover board by using NI Labview. Can you please let me know any references for this module to work by using Labview.
Thanking you in advance
↧
↧
DAQ digitizer error: PCI-5152
Dear NI,
Our equipment could not get full working with NI PCI 5152, we suggested have issue with board as attached file. after that, we checked and found one component with name 1ft have defect look like damage. so i would like to get your advice on the way to fix this issue, also could you share to us name and datasheet of this component in case we need to replace it.
↧
NI 9375 DI COM pin connected to earth ground?
Hi, I would use a NI 9375 to check the state of some digital swithces, in a circuit with a +24V power supply. Inside the 9375 the lower end of the receiver circuitry (DI COM) is connected to GND, but it is isolated from earth ground as stated in the manual.
Our +24V power supply has the "minus" pin connected to earth ground, and will be connected to DI COM..
Is there any problem for this connection?
Thank you in advance
Temistocle
↧
NI DIO serial or Parallel
Hi,
What is mean by Serial Digital Input output module and Parallel Digital Input output module.
Serial Digital Input module not support counters, eg:NI 9375
Parallel Digital Input output module support Counter operation
The link is below saying serial and Parallel type for DIO module
What is mean by Serial /Parallel type DIO module
↧
↧
Use PCI cards in PXI chassis and c++
HI,
I am currently using 2 PCI 6733 on an old experimental setup and I'm controlling the analog outputs of these cards using a c++ code.
I want to upgrade the setup. Nowadays computers do not have many PCI slots so I'm thinking about using a PXI chassis (that we already have) to put the PCI 6733 inside. I saw that PXI is similar to CompactPCI, but most of the adapters use 1 CompactPCI slot for at least 2 PCI.
Will I still be able, with a c++ code, to independently control each output of each card if I do this ?
Other question,
have you some splitted cables to connect one PCIe-6738 to two BNC2110?
Thank you in advance,
Sincerely
↧
I/O and Fusing - Each Card or Each Point?
I recently inherited a job in the water treatment business. It looks like the previous system designer fused EVERY SINGLE input and output point. This is overkill right? I have never ever fused each point. My design practice has always been to fuse each branch circuit or maybe even each card, but never every point.
What do you do? I know my practice is sound, but I'd like some feedback. I just think this is a HUGE waste of panel space.
↧
Proper card selection pulse input
Hello there
I have the need for monitoring and counting fast flows
I have a flowmeter with the fast pulse outpu up to 10 KHz - typically working range 5...8 kHz
scheme for pulse input page 20, 21 https://cdn.krohne.com/dlc/TD_OPTIBATCH4011_en_140409_4000601803_R03.pdf
Please advice which modules - prefereble solution 4...8 channels is the proper one for operation for the requested frequency
see attachements
Best regards
Janusz Pokorowski
↧
Writing valuables on another opc
Hello i'm using 32 bit version of lv2012 for gonna make reset module of my wind turbines. But i need to insert some commands in my opc server on Vi,
For ex; (it's a simple server request input which i want to make automatic on labview)
I've tried so much things to insert them on my connection. (clusters ,arrays),
Wire looked always broken so i've tried convert my constants unsigned long 32 bit as same as my terminal .
So how can i insert them on my variable 😞
↧
↧
SC-2345 Power Suppy AC Cable
Can you guys provide the part number of the AC power supply of SC-2345. We know thew board inside the blackbox is the SCC-PWR02, but we want to buy the complete assembly with all the cables.
Thanks in advance.
↧
Third part TCP-IP server (C++) to LabVIEW as TCP - Client ( How to decompile read and write multiple data? )
Dear Colleagues,
I have an old third part TCP-IP server (WINSOCK SocketAPI) written in C++, which I need to communicate with LabVIEW playing the role of TCP Client to read and to write to the TCP server. I have successfully connected to the server. However, I am not able to “decompile” the information pack, which is composed of 16 numeric variables and 6 functions (commands) neither for reading nor for writing back to the server. Is it possible to do that? If so, what kind of Labview functions should I use? Since this is a project at a very early stage, any examples would be very welcome.
↧
Measuring the value of temperature sensor using RTD
I have a Pt1000 temperature sensor and I am having a hard time understanding the value I'm getting.
The temperature should be around 20-25C and I am expecting to get a value of the resistance of around 1000ohm but I am getting a value of 25ohm.
Could someone explain to me if that's possible that I get the value of temperature directly like that ? I am using NI 9226 as an input/output Module in a compactRIO chassis
↧
How to export digital output pulse wave simultaneously?
Hi, i have trouble using NI-9401.
I want to export digital output pulse wave simultaneously, such as DIO/line2 and DIO/line3 in NI-9401.
Shortly say, I hope export 1kHz sampling rate to DIO/line2 and 10kHz sampling rate to DIO/line3, respectively.
I tried 'DAQ assistant' and then convert to 'NI-DAQmx code make'. But in this code, i read only line2 or line3(The export line is change randomly while i repeat run and stop.)
I have deficient ability about labview and English so you may hard to understand my speech...
↧
↧
Is NI-9381 compatible with cDAQ-9188?
When I connect the NI 9381 module to cDAQ-9188. NI MAX reports unsupported module. Does that mean NI 9381 and cDAQ-9188 are uncompatible?
I looked at this but it's not clear if this is specific to LabView.
↧
USB-6509 Compatible with HYT-271 Humidity Sensor
Hello,
This is a relatively straightforward and simple question. I just wanted to ensure that the HYT-271 Humidity Sensor would work with the USB-6509 board I have? There are many posts regarding its compatibility with the myRio-1900 which is a board I'm more familiar with.
Thank you!
↧
[noob and basic] Fail to send 24V signal to valves with NI 9476
Hello,
I do exactly what he does in this tutorial : https://youtu.be/F-3eX2Qf6pQ
Code is just a while loop with DAQ assistant, nothing else.
I own the NI 9476 and I am trying to send 24 V to on/off valves. They work if I send them 24 V from another source so the problem comes not from them. The electrician who did the wires told me he put the COM at the 19th place. Like this pineout on the right :
But on the left COM are 17/18, why is there two pineout (left and right) ?
Here is my module :
any idea where the problem comes from ?
↧
I2C read - unable to read byte data from register
Hi,
We are working on a solution that involves i2C communication between the XC7A35T-1FTG256C and FX3 development kit and are experiencing problems reading data from the FPGA registers.
What we are trying to do is to read a single byte of data from a register (0x40) from the FPGA, using the FX3. The transaction should be as shown in the first image, where the FX3 does this steps:
- Send start condition
- Send the device address followed by a write bit
- Receive an ACK from FPGA
- Send register address (0x40)
- Receive an ACK from FPGA
- Send repeated start condition
- Send device address followed by read bit
- Receive ACK from FPGA
- Receive byte from FPGA register
- Send ACK to FPGA
- Send stop condition to FPGA
The issue is that the FX3 does not release the Bus after sending the read address to the FPGA (step 7). This prevents the FPGA from sending the register data to the FX3 board. What could cause this problem?
I have attached a second image that shows the result we get on the signal analyzer.
Thanks
↧
↧
Standalone SW for USB-6509
Are there any SW running standalone and which may communicate with the USB-6509 DIO module?
In the end our SW developers will use Labview/Teststand but in a bring up periode it is preferred to use something lightweight "install and run" sw if available. I found a few similar topics talking about an excel VBS plugin but the links they provided where broken and old.
↧
DAQmx buffer error in TestStand but not in LabVIEW
Hello super users,
I am trying to use the cDAQ9174/NI 9475 to generate continuous pulses. My code works fine in LabVIEW. However, I run into buffer error when using the same code in TestStand (full error description below). I attached 3 VIs which belong to a packed library which is used as code module in TestStand
1) cDAQ Pulse Gen.vi: generate the pulse. It has a loop that can be exited by reading from a FGV.
2) cDAQ Pulse Stop.vi: Send a True to the FGV, in turn, read by the VI in (1) then exit the loop and clear the DAQmx task.
3) Pulse Gen FGV.vi: the Functional Global Variable
In TestStand, I spin a new thread to keep the pulse going (I have to do this to run other TestStand steps while the DAQmx generation are iterating in the cDAQ Pulse Gen.vi loop), and stop the loop in a Cleanup step.
Questions:
1) Why do I get the error while running with TestStand, but not LabVIEW?
2) Is there a better way to do this? I want to turn the pulse on in a TestStand step, read the pulses with the Unit Under Test, then stop the pulses.
Thank you,
-------
Error description
Possible reason(s):
DAQmx Write failed, because a previous DAQmx Write automatically configured the output buffer size. The buffer size is equal to the original number of samples written per channel, so no more data can be written prior to starting the task.
Start the generation before the second DAQmx Write, or set Auto Start to true in all occurences of DAQmx Write. To incrementally write into the buffer prior to starting the task, call DAQmx Configure Output Buffer before the first DAQmx Write.
Task Name: _unnamedTask<32>
↧
Synchronising digital output from PCI 6534 and PXIe 6535
I have two digital pattern cards, one in a desktop (PCI 6534) and one in a PXI chassis (PXIe 6535) that I would like to synchronise. I am using DAQmx in c#.
I have been trying to use the one in the desktop as the master card and then configure the second one to start outputting after a trigger from the first. This seems to be broadly working now. However, the timing of the pattern on the second card jumps around by up to 10 us (the period of my sample clock on both cards). To remedy this I think I need to make them share a sample clock.
How do I do this? Ideally I would like to somehow use the 10 MHz reference from the back of the PXI chassis to synchronise the PCI card with everything in the chassis. I have tried to set task.Timing.ReferenceClockSource but I always get the error "Specified property is not supported by the device or is not applicable to the task.". I have also tried configuring the PCI 6534 to output its SampleClockTimebase to PFI2 (using ConnectTerminals) but that is at 20 MHz so I'm not sure what it is useful for.
Any advice greatly appreciated.
L.
↧