[jira] [Closed] (PLC4X-246) S7 driver hangs on read

["Sebastian Voss (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PLC4X-246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sebastian Voss closed PLC4X-246.
--------------------------------
    Fix Version/s: 0.8.0
       Resolution: Fixed

> S7 driver hangs on read
> -----------------------
>
>                 Key: PLC4X-246
>                 URL: https://issues.apache.org/jira/browse/PLC4X-246
>             Project: Apache PLC4X
>          Issue Type: Bug
>          Components: Driver-S7
>    Affects Versions: 0.7.0
>            Reporter: Sebastian Voss
>            Priority: Major
>             Fix For: 0.8.0
>
>         Attachments: s7_capture.pcapng
>
>
> I’m trying to read a value from an Siemens S7-1200 PLC). When I try to read a value the read request is not being executed (I also do not receive an error message or timeout).
> This is the simple program I created:
> {code:java}
> String url = "s7://172.29.118.20:102?controller-type=S7_1200";
> PlcDriverManager manager = new PlcDriverManager();
> PlcConnection connection = manager.getConnection(url);
> boolean isConnected = connection.isConnected();
> boolean canRead = connection.getMetadata().canRead();
> System.out.println(isConnected);  // prints true
> System.out.println(canRead);  // prints true
> String field = "%DB20:5.0:BOOL";
> PlcReadRequest request = connection
>           .readRequestBuilder()
>           .addItem("value-1", field)
>           .build();
> PlcReadResponse response = request.execute().get();  // here is hangs forever
> System.out.println(response.getFieldNames());
> connection.close();{code}
> I created a Wireshark capture and it seems the PLC is reporting:
> {code:java}
> [Error code: This service is not implemented on the module or a frame error was reported (0x8104)]{code}
> Thanks to the help of [~cdutz] I figured out this is related to the protection settings of the PLC. I will try to adjust those settings and report back the result. Maybe the driver can be improved to report back those error codes to the user.
>  
>    



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