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Sting to BOOL and vice versa not working on raspberry PI [message #1834277]

Fri, 06 November 2020 11:09

Pradeep Patel

Messages: 16
Registered: October 2020

Junior Member

I have modified blinking program to use String to BOOL FB and BOOL to string FB between publish and subsribe FBs. I found this is working good when deployed on two PCs. but when i use one PC and other part of the program on raspberry PI i am getting "Datatype error" on subsribe FB. Please check the attachments. I want to use this conversion because finally i want to use MQTT for data transmission between PC and raspberry PI which takes on srings as the input and outputs only strings.
index.php/fa/39218/0/

If i do it vice versa then program works till BOOL to String FB but thereafter it does not transfer data.

Attachment: Blink_Test_Program.png
(Size: 17.83KB, Downloaded 181 times)
Attachment: PC_Prog.png
(Size: 17.64KB, Downloaded 175 times)
Attachment: Raspi_Prog.png
(Size: 15.30KB, Downloaded 187 times)

[Updated on: Fri, 06 November 2020 11:12]

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Re: Sting to BOOL and vice versa not working on raspberry PI [message #1834286 is a reply to message #1834277]

Fri, 06 November 2020 14:14

Alois Zoitl

Messages: 1619
Registered: January 2014

Senior Member

Can you please check the deployment console for any deployment errors. It looks like that the green part of your applciation or at least the F_STRING_BOOL was not deployed to your raspberryPY.

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Re: Sting to BOOL and vice versa not working on raspberry PI [message #1834291 is a reply to message #1834286]

Fri, 06 November 2020 15:20

Pradeep Patel

Messages: 16
Registered: October 2020

Junior Member

yes .. there seems to be some errors:


<Request Action="QUERY" ID="0">
<FB Name="*" Type="*"/>
</Request>

<Response ID="0"/>


<Request Action="CREATE" ID="1">
<FB Name="EMB_RES" Type="EMB_RES"/>
</Request>

<Response ID="1"/>


<Request Action="CREATE" ID="2">
<FB Name="E_PERMIT" Type="E_PERMIT"/>
</Request>

<Response ID="2"/>


<Request Action="CREATE" ID="3">
<FB Name="E_CTU" Type="E_CTU"/>
</Request>

<Response ID="3"/>


<Request Action="CREATE" ID="4">
<FB Name="SUBSCRIBE_1" Type="SUBSCRIBE_1"/>
</Request>

<Response ID="4"/>


<Request Action="WRITE" ID="5">
<Connection Destination="SUBSCRIBE_1.QI" Source="1"/>
</Request>

<Response ID="5">

</Response>


<Request Action="WRITE" ID="6">
<Connection Destination="SUBSCRIBE_1.ID" Source="raw[].mqtt[tcp://192.168.225.34:1883, forte1, output]"/>
</Request>

<Response ID="6">

</Response>


<Request Action="CREATE" ID="7">
<FB Name="F_STRING_TO_BOOL" Type="F_STRING_TO_BOOL"/>
</Request>

<Response ID="7" Reason="UNSUPPORTED_TYPE"/>


<Request Action="CREATE" ID="8">
<Connection Destination="E_CTU.CU" Source="E_PERMIT.EO"/>
</Request>

<Response ID="8"/>


<Request Action="CREATE" ID="9">
<Connection Destination="SUBSCRIBE_1.INIT" Source="START.COLD"/>
</Request>

<Response ID="9"/>


<Request Action="CREATE" ID="10">
<Connection Destination="SUBSCRIBE_1.INIT" Source="START.WARM"/>
</Request>

<Response ID="10"/>


<Request Action="CREATE" ID="11">
<Connection Destination="E_PERMIT.EI" Source="F_STRING_TO_BOOL.CNF"/>
</Request>

<Response ID="11" Reason="NO_SUCH_OBJECT"/>


<Request Action="CREATE" ID="12">
<Connection Destination="F_STRING_TO_BOOL.REQ" Source="SUBSCRIBE_1.IND"/>
</Request>

<Response ID="12" Reason="NO_SUCH_OBJECT"/>


<Request Action="CREATE" ID="13">
<Connection Destination="E_PERMIT.PERMIT" Source="F_STRING_TO_BOOL.OUT"/>
</Request>

<Response ID="13" Reason="NO_SUCH_OBJECT"/>


<Request Action="CREATE" ID="14">
<Connection Destination="F_STRING_TO_BOOL.IN" Source="SUBSCRIBE_1.RD_1"/>
</Request>

<Response ID="14" Reason="NO_SUCH_OBJECT"/>


<Request Action="START" ID="15"/>

<Response ID="15"/>

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Re: Sting to BOOL and vice versa not working on raspberry PI [message #1834295 is a reply to message #1834291]

Fri, 06 November 2020 15:46

Alois Zoitl

Messages: 1619
Registered: January 2014

Senior Member

The crictical error message is: UNSUPPORTED_TYPE

this means that you the F_STRING_TO_BOOL FB tpye is not availble in the 4diac FORTE version runing on your raspi. you need to add the iec 61131-3 module where this fb is contained in.

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