Generate Square pulse Using DO module with cRIO 9022

Question

Hello,
I want to generate square pulses of 400Hz using NI 9401 for cRIO 9022. I want to control the frequency from 1- 400Hz from PC using LAbview.

Answer 1

Hi Mekel,
most CompactRIO applications use three separate processors—a Windows PC, a real-time OS controller, and an FPGA. The CompactRIO controller uses the LabVIEW Real-Time OS instead of Windows. The FPGA does not use an operating system because the code is implemented directly in hardware.
The common tasks for the Windows host VI include the following:
• logging data to the PC
• accessing databases
• integrating with enterprise systems
• providing a human-machine (user) interface (HMI) and display
• supporting supervisory control.
The RT controller VI tasks typically include the following:
• processing data
• control
• logging data on the RT controller part of the CompactRIO system
The FPGA VI tasks include the following:
• I/O
• hardware-based timing and triggering
• low-level signal processing
• control
Communication between I/O modules and FPGA is digital because signal conditioning and ADC is done in the modules. Communication between the RT controller and FPGA uses the PCI bus in the CompactRIO. Communication between the Windows host VI and the RT controller VI normally occurs over the Ethernet.
Serena