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Response to QUERY [message #1852861]

Wed, 08 June 2022 16:33

Sarah Wenninger

Messages: 2
Registered: June 2022

Junior Member

Hi everyone,
I am trying to use a query which I send via TCP/IP to see what FBs or Connections exist. Unfortunately, I have not found an exact explanation on how the queries work. I run forte, deploy my Application and then send the query. While doing so, I encountered 2 problems.

Problem 1:
The query I am sending would for example look like this:

EMB_RES;<Request ID="16" Action="QUERY"><FB Name="A" Type="E_CYCLE" /></Request>\n'

EMB_RES;<Request ID="17" Action="QUERY"><FB Name="" Type="" /></Request>\n'

Now my problem is that I get the same response to both of them, listing all the FBs in the Application. Apparently I am not able to address a specific one.

Response:

Response ID="16">\n  <FBStatus Status="<FB name="START" type="E_RESTART"/>\n<FB name="A" type="E_CYCLE"/>\n<FB name="B" type="E_CYCLE"/>\n<FB name="C" type="E_PERMIT"/>\n<FB name="D" type="E_SWITCH"/>" />\n</Response>

Problem 2:
As soon as I move my FBs into SubApps, they are not found anymore. The only FB I would get as a response is the START FB.
The query I am sending would for example look like this:

EMB_RES;<Request ID="18" Action="QUERY"><FB Name="SubApp.A" Type="E_CYCLE" /></Request>\n'

Response:

Response ID="18">\n  <FBStatus Status="<FB name="START" type="E_RESTART"/>" />
</Response>

Does anybody have any idea why it doesn't work? Have these issues occurred to anybody before?

Help would be highly appreciated :)

Have a nice day!

Sarah

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Re: Response to QUERY [message #1852863 is a reply to message #1852861]

Wed, 08 June 2022 19:48

Alois Zoitl

Messages: 1585
Registered: January 2014

Senior Member

Hi,

4diac FORTE tries to follow the definitions of the "IEC 61499 compliance profile for feasibility demonstrations" [1]. However the query part is the least tested and used. So it may also just be a bug that you found. A detailed explanation of the query syntax can be found in Table 6.4.2-2 in [2].

I hope this helps.

Cheers,
Alois

[1] https://www.holobloc.com/doc/ita/index.htm
[2] https://www.holobloc.com/doc/ita/s4.htm

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Re: Response to QUERY [message #1852886 is a reply to message #1852863]

Thu, 09 June 2022 14:45

Sarah Wenninger

Messages: 2
Registered: June 2022

Junior Member

Thank you! The explanation of the query syntax was very helpful. I'll see how to proceed with this information. :)

Sarah

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Re: Response to QUERY [message #1852904 is a reply to message #1852886]

Fri, 10 June 2022 07:34

Alois Zoitl

Messages: 1585
Registered: January 2014

Senior Member

Happy to help. But just again as warning 4diac FORTE may have bugs in the query infrastructure. Please let us know if you experience strange behavior.

Cheers,
Alois

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