Description

PCIe-7857R NI module
PCIe-7857R NI module
Module Clips Drive controller servo motor
Contact: Mr. Lai
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I cannot see my third-party USB instrument in Measurement&Automation Explorer (MAX), but it exists as a USB instrument in Windows Device Manager. Why do we see this phenomenon and how can we solve it so that we can communicate with the instrument?

My USB-6343 performs normally in Windows Device Manager, but in MAX, there is a yellow triangle and a message is displayed: There was a problem updating the settings for this device. The operation timed out.

I cannot see my 3rd Party USB devices in MAX, but I can communicate with them through the command line, so I know they are connected. What do I need to do to see my device in MAX?

Solution

If the device is displayed in the Windows Device Manager, it indicates that the Windows machine can recognize the USB device and has associated a specific driver to communicate with the device. One possible reason why the instrument did not display in MAX is that Windows did not associate the correct driver with the device.

Check if the NI-VISA driver is installed on the computer. If doing so, please check the compatibility between NI-VISA and LabVIEW, as well as the compatibility between NI-VISA and the operating system. If not, please visit the NI-VISA download page and download and install the appropriate driver. Please ensure to restart the computer after installation.

Try resetting the MAX database, as described in the article on how to repair or reset the NI MAX database file.

If you are using a third-party VISA device on the same computer, you may need to set NI-VISA as the primary VISA implementation, as described in the NI VISA article after installing third-party VISA software.

Uninstall and reinstall the NI-VISA driver. When reinstalling, if possible, disable all firewalls and antivirus software.

If NI-VISA is installed, please try re associating the USB device to use the NI-VISA driver:

Go to Windows Device Manager and search for USB devices according to the following image.

Use NI”s counting/timer or M-series board to complete resettable pulse counting PCIe-7857R NI module

Main software:

Main software version: 1.0

Main software revision version: N/A

Secondary software: LabVIEW Development Systems>>LabVIEW Base Package

Hardware: Counter/Timers (TIO)>>Devices>>PCI-6601

Question: I want to use NI”s counting/timer or M-series board to perform edge counting on my input signal and reset the count with another pulse signal.

Answer: If an external trigger source is used, such requirements can be completed using any of NI”s M-series cards with a counter or counting/timer. The counting/counter board is particularly suitable for generating counting reset signals, as other counters on the board can be used to generate a pulse signal of a known frequency.

There are two ways to use the counter input. The first method is a two channel pulse encoding method with Z index. This method uses two input signals, channel A and channel B, to count, while the Z-channel signal is used to reset the count. This method uses the rising edge of channel A to increase the count, while the rising edge of channel B to decrease the count. Therefore, the two pulse encoding method is also called an add/subtract counter.

Set the signal values in channels A and B to determine when the Z-channel signal triggers a count reset. This allows you to perform an accurate count reset without causing loss of counts for channels A and B. Count reset can be completed within one clock cycle of the maximum time base.

For a specific example, if we only need to increase the count, we can ground channel B. The relevant connection relationships for this setting are as follows:

Ctr Source: Incremental count signal (channel A)

Ctr AUX: Decrement count signal (channel B) – connected to ground

Ctr Gate: Reset signal (Z-path index)

The following figure describes the Counting process of resetting the count when the channel A and channel B signals are both low.

Regarding the Z-path index, both page 39 of the 6601/6602 User Manual and page 120 of the M Series User Manual need to be introduced.

The following attachment is a simple VI example using Z-path indexing.

The second measurement method is buffer period measurement. The relevant content is detailed on the NI Developer Zone website.

UMI-7764
SCXI-1600
SCXI-1346
SCXI-1327
SCXI-1326
SCXI-1325
SCXI-1324
SCXI-1304
SCXI-1303
SCXI-1302
SCXI-1300
SCXI-1180
SCXI-1162HV
SCXI-1160
SCXI-1141
SCXI-1126
SCXI-1125
SCXI-1124
SCXI-1102
SCXI-1100
SCXI-1001
SCXI-1000
PXI-GPIB
PXIE-8431/8
PXIE-8431/16
PXIE-8430/8
PXIE-8430/16
PXIE-8234
PXIE-7975R
PXIE-7966R
PXIE-7965R
PXIE-7962R
PXIE-7961R
PXIE-6674T
PXIE-6672
PXIE-6614
PXIE-6612
PXIE-6556
PXIE-6555
PXIE-6548
PXIE-6547
PXIE-6545
PXIE-6544
PXIE-6537
PXIE-6536
PXIE-6535
PXIE-6368
PXIE-6366
PXIE-6363
PXIE-6361
PXIE-6358
PXIE-6356
PXIE-6341
PXIE-6124
PXIE-5693
PXIE-5673E
PXIE-5672
PXIE-5665
PXIE-5663E
PXIE-5644R/5645R
PXIE-5641R
PXIE-5632
PXIE-5630
PXIE-5622
PXIE-5451
PXIE-5450
PXIE-5442
PXIE-5186
PXIE-5185
PXIE-5162
PXIE-5160
PXIE-5122
PXIE-4844
PXIE-4610
PXIE-4499
PXIE-4497
PXIE-4492
PXIE-4357
PXIE-4353
PXIE-4331
PXIE-4330
PXIE-4322
PXIE-4300
PXIE-4154
PXIE-4145
PXIE-4144
PXIE-4143
PXIE-4142
PXIE-4141
PXIE-4140
PXIE-4113
PXIE-4112
PXIE-2790
PXIE-2727
PXIE-2725
PXIE-2593
PXIE-2575
PXIE-2569
PXIE-2543
PXIE-2541
PXIE-2540
PXIE-2532B
PXIE-2531
PXIE-2529
PXIE-2527
PXIE-2515
PXIE-2514
PXIE-2512
PXIE-1435

Company advantage service:
1.Has been engaged in industrial control industry for a long time, with a large number of inventories.
2.Industry leading, price advantage, quality assurance
3.Diversified models and products, and all kinds of rare and discontinued products
4.15 days free replacement for quality problems

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PCIe-7857R NI module

Description

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