Description

PCI-7831 Data acquisition card
PCI-7831 Data acquisition card
Module Clips Drive controller servo motor
Contact: Mr. Lai
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Problems encountered when allocating large buffers for serial ports using NI-VISA

Main software: Driver Software>>NI-VISA

Main software version: 4.0

Main software revision version: N/A

Secondary Software: Driver Software>>NI Serial

Question:

The Windows serial driver does not allow NI-VISA to create a buffer greater than 40000 bytes. When I created a buffer larger than this limit, I received an error -1073807300: System resources are insufficient. If I ignore this error, any buffer larger than 40968 bytes will actually only have 40968 bytes. How can I allocate a larger buffer for the serial port?

Answer:

You should install the latest version of the NI Series driver (at least after NI Series 1.45). This will cover the standard serial port driver for Windows, allowing the serial port buffer size to reach 232 (4294967296 bytes) All available NI Serial drivers can be downloaded from the link below.

LED power indicator on PXI and PXIE controllers PCI-7831 Data acquisition card

Hardware: Modular Instruments

Question: Does the PWE OK (8101, 8102, 8104, 8105, 8106, 8108, 8110) or PWROK/Fault (8109, 8133) power indicator light on my PXI/PXIE controller continue to flash red, or cannot it continue to light up?

Answer: The power indicator light PWR OK or PWROK/FULT LED should continue to light up during normal operation, and the hard drive light will flash when the system starts reading the hard drive. If the power light cannot continue to light up or flashes red, the following attempts can be made:

Ensure that the chassis power connection is normal.

Check whether all fuses and disconnect switches on the chassis or power supply are normal.

Confirm that the controller module is securely inside the chassis.

Remove other modules from the chassis.

Remove all unnecessary cables and devices connected to the chassis.

Try plugging the controller into another chassis.

Try plugging the same controller into the chassis.

Clear CMOS. Refer to the installation and configuration section in the controller user manual and refer to the relevant system CMOS section. Generally speaking, pressing a button or moving a jumper can complete a clear CMOS operation.

Repair the controller hard drive. Refer to the installation and configuration section of the controller user manual and refer to the relevant hard drive repair section. But if the controller cannot start properly, it cannot perform hard drive repair.

If none of the above measures can solve the problem, the customer needs to contact NI company to repair the controller.

PXIe-5450
PXI-2533
CROO-9104
CRLO-9012
CRKO-9104
CRJO-9042
CRJO-9022
CRIO-P048
CRIO-P004
CRIO-O104
CRIO-O022
cRIO-FRC
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CRAQ-9179
GPIB-140A 186135G-01
NI-9853

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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PCI-7831 Data acquisition card

Description

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