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Posted to dev@plc4x.apache.org by Wolfgang Huse <wo...@nutanix.com> on 2020/04/30 07:27:59 UTC

Hello and Basic Question, mqtt-example

Hello!
I met Christofer the first Time this year at the BuildingIOT in Essen and he told me about PLC4x.
Finally I have some time to deal with the project and want to say Hello.

Since I only have Python experience so far, the first steps in Java are a bit unfamiliar.
I have a problem with the mqtt sample:
The sample config establishes a connection to test:plc4x-example-mqtt and sends different data even in the interval.

java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-connector.yml
Connected with return code SUCCESS
Publish acknowledged: {"intParam":"785285590","intParam2":"-1075569817"}
Publish acknowledged: {"intParam":"1947089580","intParam2":"-1742619214"}
Publish acknowledged: {"intParam":"-595050756","intParam2":"1191528931"}


When I use the Prosys OPC Simulator it seems that only the first received data packet is forwarded via mqtt...

java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-opc.yml
Connected with return code SUCCESS
Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}

Is there anything I don’t have in mind to look at ?

Regards,
Wolfgang Huse

Re: Hello and Basic Question, mqtt-example

Posted by Christofer Dutz <ch...@c-ware.de>.
Hi Wolfgang,

First of all welcome to our fine little community :-)

We'll to our best to help you. I'll have a look later on as I'll be having two video conferences in the next two hours.
Perhaps someone else here can help a little earlier.

Chris



Am 30.04.20, 09:49 schrieb "Wolfgang Huse" <wo...@nutanix.com>:

    Ah... inspecting the Logs of the Simulator and shows that there a done several READS (up to 140) within miliseconds which then a forwarded step by step based on the configured polling interval.

    How does it happen that there are done so many requests ? 

    Regards,
    Wolfgang


    On 4/30/20, 9:28 AM, "Wolfgang Huse" <wo...@nutanix.com> wrote:

        Hello!
        I met Christofer the first Time this year at the BuildingIOT in Essen and he told me about PLC4x.
        Finally I have some time to deal with the project and want to say Hello.

        Since I only have Python experience so far, the first steps in Java are a bit unfamiliar.
        I have a problem with the mqtt sample:
        The sample config establishes a connection to test:plc4x-example-mqtt and sends different data even in the interval.

        java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-connector.yml
        Connected with return code SUCCESS
        Publish acknowledged: {"intParam":"785285590","intParam2":"-1075569817"}
        Publish acknowledged: {"intParam":"1947089580","intParam2":"-1742619214"}
        Publish acknowledged: {"intParam":"-595050756","intParam2":"1191528931"}


        When I use the Prosys OPC Simulator it seems that only the first received data packet is forwarded via mqtt...

        java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-opc.yml
        Connected with return code SUCCESS
        Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
        Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
        Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}

        Is there anything I don’t have in mind to look at ?

        Regards,
        Wolfgang Huse

Re: Hello and Basic Question, mqtt-example

Posted by Wolfgang Huse <wo...@nutanix.com>.
Ah... inspecting the Logs of the Simulator and shows that there a done several READS (up to 140) within miliseconds which then a forwarded step by step based on the configured polling interval.

How does it happen that there are done so many requests ? 

Regards,
Wolfgang


On 4/30/20, 9:28 AM, "Wolfgang Huse" <wo...@nutanix.com> wrote:

    Hello!
    I met Christofer the first Time this year at the BuildingIOT in Essen and he told me about PLC4x.
    Finally I have some time to deal with the project and want to say Hello.

    Since I only have Python experience so far, the first steps in Java are a bit unfamiliar.
    I have a problem with the mqtt sample:
    The sample config establishes a connection to test:plc4x-example-mqtt and sends different data even in the interval.

    java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-connector.yml
    Connected with return code SUCCESS
    Publish acknowledged: {"intParam":"785285590","intParam2":"-1075569817"}
    Publish acknowledged: {"intParam":"1947089580","intParam2":"-1742619214"}
    Publish acknowledged: {"intParam":"-595050756","intParam2":"1191528931"}


    When I use the Prosys OPC Simulator it seems that only the first received data packet is forwarded via mqtt...

    java -jar target/plc4j-hello-connectivity-mqtt-0.6.0-uber-jar.jar mqtt-opc.yml
    Connected with return code SUCCESS
    Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
    Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}
    Publish acknowledged: {"Counter":"8","Sinusoid":"0.8134733458143782"}

    Is there anything I don’t have in mind to look at ?

    Regards,
    Wolfgang Huse