rest() from Iec6205621Client about iec62056-21

[Krolken]

Hi.

Are you proposing a change? I don't have any devices that uses short reaction time and cannot test against it.
Do you have one?

[youserj]

yes. I develop soft and powermeter at the moment.
And more one problem:
(Acknowledgement/option select message = 20ms) + (short_reaction_time = 20ms) = 40ms
however - self.port.flush() - give delay about 50ms(in windows 10).
can I remove flush?
and make delay use time.time() into rest method

[Krolken]

If you want to try out some differnet settings i sugest you subclass and override.
I don't see how flush should be a problem since it returns when all data is sent. You don't want to close the port while stil having data in the outbuffer.

Also the timings are mostly not a problem, since you write and then do a blocking read. So the only time you have to make sure to wait is when you receive something and then send it back.

What meter are you using?

[Krolken]

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