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Mike

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Posts posted by Mike

  1. I'm using the V350-TU24 for PWM control of a powerful chopper. Since the controller uses RC-circuit, is not possible to get the output high frequency and sharp edges. I had to climb inside) and found the magic point.

    The result is a control on the chopper frequency of 8 kHz (via optocoupler..). But there is a downside - only 32 steps adjustment duty cycle.

    And by the way, HS input is also modified to measure frequencies up to 100 kHz.

    post-210-0-73074100-1369280997_thumb.jpg

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  2. Another quest about Protocol :

    I'm using V350-TU24 and want to receive message like " >1[CR] "   after request  (Send " &321[cr] ")  via Port2  RS485.

    STX and ETX  of Scan   sets  for   3E  (i.e.">")  and   0D  ([cr]).  Pattern message=  "1"

    When I send legal message from the hex terminal  "  3E 31 0D  "  , V350 recognizes this message as alien -   Index= -1 ,  Session complete=0

    When I add at begin "0D",  and send  "  0D 3E 31 0D  "  ,  all working properly.   But why this 0D ?!

    ! if I try to turn off the step Send request,  it works without  0D ..  and with 0D..  But the efect on the "Number recieved bytes" ..

    Serial monitor of the V350 info mode displays everything correctly.

    Visilogic 8.6.1.  OS of V350 updated.

    HELP

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