Experimental Physics and Industrial Control System
On 1/8/23 19:41, Michael Davidsaver wrote:
So the "Scan rate '%s' is not achievable" warning can be ignored. Almost...
oops. My mistake. The timer queue is not used for SCAN. So this
warning can be ignored in that context.
There is a long standing oddity in the timer queue code where quantum/2 is subtracted from all
user provided delays. This can result in a negative number, which is treated as 0 delay.
This oddity is relevant in some cases where a record field holds a delay
time. eg. ODLY of calcoutRecord, or HIGH of boRecord.
- References:
- Scan rate '.01 second' not achievable Barrett (US), Patrick E via Tech-talk
- Re: Scan rate '.01 second' not achievable Érico Nogueira Rolim via Tech-talk
- Re: Scan rate '.01 second' not achievable Michael Davidsaver via Tech-talk
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