Synchronize PXI-8512/2 and DAQ, PXI-6220 CAN

Hello

I read some examples and other posts on the topic "sync", but I need more information.

I'm using a PXI-8512/2 with an older application, based on the API of frame. Several frames are transmitted and received periodically, and I need to enter a unique ID of arbitration which has a cycle of ~ 5 ms.

At the same time, I need a task of data acquisition (analog input) with a sampling frequency of 1000 Hz.

The challenge is, I need to have the same time base for the analog input and CAN.

As far as I understand, the timestamps CAN are created in the PXI-8512. The timestamp of the start of the DAQ tasks is based on the time of OS (Windows).

Transmission/reception CAN must be running still (to perpetuate the ECU), and the data acquisition task will be triggered manually.

I found the example '\nican\Frame - base with NI - DAQmx.llb\CAN Frame entry API DAQmx Input.vi'. It fits my needs? There is a comment saying: "the departure of AI uses the same sampling as CAN. What it means? The sampling frequency of my CAN is fundamentally different from DAQ. But I have to be able to associate each sample DAQ for a CAN of armature (same time base).

Thank you for any information helping to clarify.

Concerning

Hello

Sorry, I don't know why I thought you had an X-Series. There is also an example for the other series with the XNET driver:

Synchronize PXI - CAN with analog DAQmx of entry (using the PXI-Clk10) .vi

Kind regards

Heinz

Tags: NI Products

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