`TO: Dave Brown, 72103,2235
`DA’rE: 11111194 7:47 PM
`
`Re: WOSA/XMC, Draft 2, ICounter
`
`Hello Dave,
`
`I would like to go over the ICounter interface in this correspondence.
`
`ICounter Interface .................. Only the AT6400-AUX1 (bus-based indexer) allows the user to have access to hardware
`counters. Each of the four encoder inputs can be configured as an individual up/down counter (see CN-IE command). A
`ResetCounter0 method needs to be added to the ICounter interface (see CNTR command).
`
`The current counter value for each counter can be obtained via the TCNT command. The counter value cannot be obtained via
`the "fast status" registers.
`
`The AT6400-AUX1 product also has the ability to interrupt the PC when a count value has exceeded a maximum count, or when
`a count value falls below a minimum count (see INTHW and CNTINT commands). Perhaps you would include an
`Enablelnterrupt0 method.
`
`Conclusion ........... After reviewing the ITimer and ICounter interfaces, it just occurred to me that you might want to provide
`timer and counter services within the Motion Component itself. For example, a user might want access to the high-resolution
`timer in WIN32. Or the user might want to count "motion complete on axis n" interrupts (see INTHW command). Is this what you
`had in mind with Attachlnterrupt0?
`
`Correction In the discussion of the ITimer interface the current timer value should be obtained from the T’rIM
`command rather than the [TIM] variable.
`
`RGB00051666
`
`EXHIBIT
`
`W~VW.DEPOBOOK.COM
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