Hi Chris, I think if you figured out how to setup your system to properly use the example here for Java https://infosys.beckhoff.com/english.php?content=../content/1033/tcsample_java/html/tcjavatoads_sample01.html&id= you've actually reached more than I did, so far
Right now I'm using a small C# application to read from ADS Server (described here https://infosys.beckhoff.com/english.php?content=../content/1033/tcsample_java/html/tcjavatoads_sample01.html&id=) and then in the same application pass the data on via UDP Client and on the same machine a Java Application runs a UDP Server to capture the ADS Data and do some business logic. [VERY MESSY] I can share my stuff, if it is of interest as soon as I debugged it. But as you see, this is nothing I want to go to production with ... Cheers, Jonas -----Ursprüngliche Nachricht----- Von: Christofer Dutz [mailto:christofer.d...@c-ware.de] Gesendet: Freitag, 31. Juli 2020 10:17 An: dev@plc4x.apache.org Betreff: Re: How to compose Read requests for ADS Protocol with PLC4X? Hi think i found it ... I needed the Ads.dll itself ... of course that's not documented in the documentation ;-) Chris Am 31.07.20, 09:59 schrieb "Christofer Dutz" <christofer.d...@c-ware.de>: Hi Jonas, I think I can possibly help you now … as I worked on the new Beckhoff driver I finally got to working with the ADS protocol. I think the problem you are having is that the address you are using is simply not correct. The PLC doesn’t find an address called “BOOL1” … After discussing things with the Beckhoff Tech-Staff I learned, that you should address resources with symbolic addresses like: main.f_trigDateiGelesen.M:BOOL Please note that there seems to be differences between TwinCat2 and TwinCat3 devices regarding this symbolic address format. The older ones seem to simply start without the module name. Like: “.f_trigDateiGelesen.M:BOOL” (But I haven’t been able to verify this) The other option would be to use fixed addresses, like: 0x0000f005/0x1a800000:BOOL Which is however considered bad practice, as adding one single byte to the PLC could ruin all of your addesses. Hope this helps a little more. Chris Von: "Hillenbrand, Jonas (wbk)" <jonas.hillenbr...@kit.edu> Antworten an: <dev@plc4x.apache.org> Datum: Mittwoch, 29. Juli 2020 um 11:25 An: "dev@plc4x.apache.org" <dev@plc4x.apache.org> Betreff: How to compose Read requests for ADS Protocol with PLC4X? Hi there, I’m working on using the PLC4X framework within my research projects involving datalogging from Beckhoff PLC via ADS protocol. I was able to connect with the PLC using the following code, but it fails on the line where the read request is executed: PlcConnection plcConnection = null; String connectionStr = " ads:tcp://127.0.0.1:48898/5.23.164.94.1.1:851/129.254.235.187.1.1:32835”; try { plcConnection = new PlcDriverManager().getConnection(connectionStr); if (this.plcConnection.isConnected()){ if (!this.isAdsReadable() || !this.isAdsWritable() || !this.isAdsSubscribable()) { return false; } this.logger.log("Connected successfully with " + connectionStr); return true; } else { this.logger.log(Level.ERROR, "Could not connect with " + connectionStr); return false; } } catch (PlcConnectionException e) { // TODO Auto-generated catch block this.logger.log(e); return false; } PlcReadRequest.Builder builder =plcConnection.readRequestBuilder(); builder.addItem(“BOOL1”, "BOOL1:BOOL"); // Boolean variable in GVL (global) list of SPS Project PlcReadRequest readRequest = builder.build(); PlcReadResponse response = null; try { response = readRequest.execute().get(); // CODE FAILS HERE } catch (InterruptedException e) { // TODO Auto-generated catch block this.logger.log(e); } catch (ExecutionException e) { // TODO Auto-generated catch block this.logger.log(e); } Console Output: Connected successfully with ads:tcp://127.0.0.1:48898/5.23.164.94.1.1:851/129.254.235.187.1.1:32835 Exception in thread "main" org.apache.plc4x.java.api.exceptions.PlcRuntimeException: Non error code received Result{AdsReturnCode{hex=0x0710, dec=1808, description='symbol not found', possibleCauses='', solution=''}} at org.apache.plc4x.java.ads.connection.AdsAbstractPlcConnection.lambda$mapFields$3(AdsAbstractPlcConnection.java:184) at java.base/java.util.concurrent.ConcurrentHashMap.computeIfAbsent(ConcurrentHashMap.java:1708) at org.apache.plc4x.java.ads.connection.AdsAbstractPlcConnection.mapFields(AdsAbstractPlcConnection.java:163) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.LinkedList$LLSpliterator.forEachRemaining(LinkedList.java:1242) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.ForEachOps$ForEachTask.compute(ForEachOps.java:290) at java.base/java.util.concurrent.CountedCompleter.exec(CountedCompleter.java:746) at java.base/java.util.concurrent.ForkJoinTask.doExec(ForkJoinTask.java:290) at java.base/java.util.concurrent.ForkJoinTask.doInvoke(ForkJoinTask.java:408) at java.base/java.util.concurrent.ForkJoinTask.invoke(ForkJoinTask.java:736) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateParallel(ForEachOps.java:159) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateParallel(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:233) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at org.apache.plc4x.java.ads.connection.AdsAbstractPlcConnection.mapFields(AdsAbstractPlcConnection.java:157) at org.apache.plc4x.java.ads.connection.AdsAbstractPlcConnection.read(AdsAbstractPlcConnection.java:103) at org.apache.plc4x.java.base.messages.DefaultPlcReadRequest.execute(DefaultPlcReadRequest.java:44) at net.sytes.botg.ads.MyADSClient.executeReadRequest(MyADSClient.java:108) at net.sytes.botg.ads.UnitTest_MyADSClient.test2(UnitTest_MyADSClient.java:60) at net.sytes.botg.ads.UnitTest_MyADSClient.main(UnitTest_MyADSClient.java:44) Could anybody offer some help? Am I constructing the item for the read request correctly, what if I’m trying to read variables in a subroutine let’s say in the Project “1Achser” my PLC Project name is “SPSObject” and I have a PRG block named “MainGUI”, in there I have the variable “CurPos [LREAL]”, how would I conceive the addItem Method? --> builder.addItem(“CurPos”, "1Achser.SPSObject.MainGUI.CurPos:LReal")? Anyhelp would be appreciated. And by the way, I like the idea of PLC4X very much and love to contribute, given that I can make it work for my setup :D Best Regards Jonas
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