NI DAQ + HW 97 TTL-485

[BRLS]

Yes, OK.

It would go straight through a converter and connect to the USB port, a serial monitor via VSC and I would collect the data, and everything would be ok.

However, due to the architecture of my application, it is really necessary to go through the DAQ, whether coming from an Arduino or directly from the inclinometer.

[santo_13]

Unfortunately, it doesn't make any sense. Who designed the architecture? why does it has to go through DAQ? if it must, find another inclinometer that can output as analog voltage and use USB-6008 to capture the data.

I don't see a logical way to use USB-6008 to implement a TTL-485 communication.

[BRLS]

I saw this in the USB 6009 documents, and it caught my attention about TTL.

Would it then be possible to communicate the HW-97 converter with another converter with the DAQ? Or does this TTL signal have another purpose that I don't understand?

Grateful.

[santo_13]

TTL signal in the image just means that TTL level digital logic signal.

A protocol consists of digital lines with a defined timing, level and packet structure to exchange information. This also means protocols have strict timing requirements between transitions across the lines.

Now, USB-6009 provides only the ability to write/read digital signals, it will be up to you to implement the logic to write/read digital logic with the correct time interval to transfer data.

For instance, the below image depicts the RS485 signal and its TTL equivalent for one packet. Now, you will have to instruct the DAQ to write/read the signal at the correct interval (baud rate) to exchange data.