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From Otto Fowler <ottobackwa...@gmail.com>
Subject Re: Source Time of PLC Value?
Date Mon, 08 Mar 2021 03:30:14 GMT
So, maybe the extension is timestamp *and* timestamp source.

uint64_t timestamp;
typedef enum {
	/* timestamp was generated by the source device */
	SOURCE,
	/* timestamp was generated by plc4x on receiving */
	GENERATED,
} TimestampQuality;



> On Mar 5, 2021, at 18:04, Ben Hutcheson <ben.hutche@gmail.com> wrote:
> 
> We do have some error codes, but it would just need to be extended a bit. I
> don't think we have one for BAD (we still receive data but the source has
> marked it bad).
> 
> Timestamps I think are definitely a good idea, especially if we eventually
> DNP3.
> 
> On Fri, Mar 5, 2021 at 5:39 PM Łukasz Dywicki <luke@code-house.org> wrote:
> 
>> You have response code for each individual field which allows you to
>> determine state (OK, REMOTE_ERROR etc.). Same information should be
>> available also for subscriptions.
>> 
>> Best,
>> Łukasz
>> 
>> On 05.03.2021 21:04, Andreas Vogler wrote:
>>> Ah, forgot: and is there a status available? Valid/invalid/good/bad
>> indicator of a plc value?
>>> 
>>>> On 05.03.2021, at 21:02, Andreas Vogler <andreas.vogler@me.com.INVALID>
>> wrote:
>>>> 
>>>> Hi,
>>>> 
>>>> How can I get the source time of a PlcValue?
>>>> 
>>>> a) from a subscription PlcSubscriptionEvent
>>>> b) from a read request  PlcReadResponse
>>>> 
>>>> Best regards,
>>>> Andreas
>>> 
>> 


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