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TMS320F28388D: Question about the communication function in tformat

Green Deng
Expert 4490 points
Part Number: TMS320F28388D

Dear team:

There is a 125us interrupt in the customer's program. If each interrupt communicates with the absolute value motor through tformat, the communication will make an error and the data verification will not pass.

If the program is set to communicate once in two interrupt cycles (i.e. 250us), it can communicate normally.

What is the minimum communication cycle of T-format?

Best regards,

Green

  • 0
    TI__Guru* 91085 points

    Green,

    It will depend on the cable length (this adds delay) and which command is being sent.  The longest command/response is ID3. 

    I suggest the customer measure the time it takes to send/receive ID3.  They can check on an oscilloscope as this will include the cable delay time. 

    Regards

    Lori