Hi, I had the same problem with PLC4X and also with plain Milo. One OPC UA Server didn’t allow to set a time on write and another OPC UA Server didn’t work without setting a time :-) … so I think it is a good idea to make this configurable …. there are so many options available in OPC UA…
Btw: What is the default in PLC4X for the Monitoring Filter Parameter? Milo default is to trigger a change on State or Value change… but in my case I also wanted to get notified if just the timestamp changes…. so I had to add an option for that… Regards, Andreas > On 11.03.2021, at 16:35, Matthias Milan Strljic <[email protected]> > wrote: > > Hi Jim and Ben, > > I think I know where this comes from. In the rework process we missed the > changes i added at the commit "d45f748b08d6c083a22993e756114ec8840589fa" > where it enforced the timestamp of a value to "null" because Siemens does > not allow you to write the timestamps of a value on your own. > In the past i just made the timestamp null for all requests but i think > that is not a really good default behavior should we add there an option > for that @Ben? > > Greetings Matthias > > Am Do., 11. März 2021 um 16:24 Uhr schrieb Matthias Milan Strljic < > [email protected]>: > >> Hi Jim, >> >> nvm i over read the part with "Reading was OK" :D >> >> >> Am Do., 11. März 2021 um 16:21 Uhr schrieb Matthias Milan Strljic < >> [email protected]>: >> >>> Hi Jim, >>> >>> an addition to what Ben wrote. Make sure that you wrote the symbol of a >>> Siemens value correct. Some versions of Siemens TIA Variable mappings >>> require the ["]-Symbol included. So your path could also be required to >>> escape those. >>> In your case this could be something like: >>> builder.addItem("S7PLC.CureAbort", "ns=2;s=\"S7PLC\".CureAbort:BOOL", true); >>> As far as i worked with it correlates with the structure of your project >>> and your modularization in Components and FunctionBlocks but this is not >>> consistent over all used PLC or Sinumerik Controls. >>> >>> Greetings Matthias >>> >>> >>> Am Do., 11. März 2021 um 15:29 Uhr schrieb Wang, Jim < >>> [email protected]>: >>> >>>> Hi PLC4X team, >>>> >>>> When I use PLC4X's OPCUA protocol to write PLC, I always get >>>> ACCESS_DENIED for the PLC's tag (Reading is OK.) >>>> I list my code and message I get below in FYI: sections. >>>> How can I get rid of this issue? >>>> Thanks, >>>> >>>> Jim >>>> >>>> >>>> FYI: my codes >>>> ================================== >>>> public static void WritePLC(PlcConnection plcConnection) throws >>>> InterruptedException, Exception, TimeoutException { >>>> PlcWriteRequest.Builder builder = >>>> plcConnection.writeRequestBuilder(); >>>> builder.addItem("S7PLC.CureAbort", "ns=2;s= >>>> S7PLC.CureAbort:BOOL", true); >>>> PlcWriteRequest writeRequest = builder.build(); >>>> PlcWriteResponse response = writeRequest.execute().get(); >>>> for (String fieldName : response.getFieldNames()) { >>>> if(response.getResponseCode(fieldName) == >>>> PlcResponseCode.OK) { >>>> System.out.println("Value[" + fieldName + "]: >>>> updated"); >>>> } >>>> else { >>>> System.out.println("Error[" + fieldName + "]: " + >>>> response.getResponseCode(fieldName).name()); >>>> } >>>> } >>>> } >>>> >>>> FYI: the message when I run my codees >>>> ====================================== >>>> opcua:tcp://localhost:49601/ >>>> [main] INFO org.apache.plc4x.java.PlcDriverManager - Instantiating new >>>> PLC Driver Manager with class loader >>>> jdk.internal.loader.ClassLoaders$AppClassLoader@443b7951<mailto: >>>> jdk.internal.loader.ClassLoaders$AppClassLoader@443b7951> >>>> [main] INFO org.apache.plc4x.java.PlcDriverManager - Registering >>>> available drivers... >>>> [main] INFO org.apache.plc4x.java.PlcDriverManager - Registering driver >>>> for Protocol s7 (Siemens S7 (Basic)) >>>> [main] INFO org.apache.plc4x.java.PlcDriverManager - Registering driver >>>> for Protocol opcua (OPC UA (TCP)) >>>> [main] INFO org.apache.plc4x.java.opcua.connection.OpcuaTcpPlcConnection >>>> - Configured OpcuaTcpPlcConnection with: host-name 127.0.0.1 >>>> [NonceUtilSecureRandom] INFO >>>> org.eclipse.milo.opcua.stack.core.util.NonceUtil - SecureRandom seeded in >>>> 0ms. >>>> [main] INFO org.eclipse.milo.opcua.sdk.client.OpcUaClient - Eclipse Milo >>>> OPC UA Stack version: 0.5.3 >>>> [main] INFO org.eclipse.milo.opcua.sdk.client.OpcUaClient - Eclipse Milo >>>> OPC UA Client SDK version: 0.5.3 >>>> Error[S7PLC.CureAbort]: ACCESS_DENIED >>>> Find West on Twitter <http://twitter.com/#!/WestPharma> and LinkedIn< >>>> http://www.linkedin.com/company/west-pharmaceutical-services?trk=fc_badge >>>>> . >>>> >>>> ________________________________ >>>> The contents of this message are confidential and may be privileged. If >>>> you have received this message in error, please permanently delete it, >>>> along with any files that may be attached to this message, without reading, >>>> printing, copying, forwarding or otherwise distributing it. Please notify >>>> the sender of the error immediately so that we can prevent it from >>>> happening again. >>>> >>>>
