Motion Control and Motor Drives

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Hello,

 

I have a motion control project where I would like to record position data. High speed capture is limited with 2Khz sample rate. But I have to record at much more higher speed. 

 

I read that there was another option which is connecting the motion control card (I am using a PCI 7358) and the DAQ card by using a RTSI cable and routing the A and B channels of the encoder to the DAQ card using the RTSI lines.

 

I have 6143 and 6280 DAQ boards, PCI 7358 and a RTSI cable. 

 

Q1. Which card is better to use? 6143 or 6280?

 

Q2. When I examine examples, I saw that its possible to route phase A and phase B signals of an encoder to the RTSI line with Signal Select.vi. But I couldn't find an example about how to read them from DAQ Card.

 

Q3. How could I obtain position information from encoder's phase A and phase B pulses which is acquired from DAQ card?

 

Regards

 

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Accepted by serkanb

Hi serkanb,

 

Q1: The 6280 has a higher counter frequency so it would be better.

 

Q2: Check out these links: Using the RTSI Software Port with FlexMotion or Integration with Motion Using RTSI

 

Q3: Check out LabVIEW shipping examples like Measure Angular Position.vi.

Jeff | LabVIEW Software Engineer
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