Quick-Test Programm

Reply to Quick-Test Programm on Thu, 04 Mar 2010 15:15:51 GMT

mlohbihler — Thu, 04 Mar 2010 15:15:51 GMT

I'm not sure what this test program was intended for, but it has revealed an odd condition. The property identifiers "all", "required" and "optional" are special in that they refer to multiple properties rather than one. As such, a ReadProperty request cannot be used to retrieve them since the response can only contain a single property.

But, the LocalDevice.readProperties method detects when a single property identifier was provided, and uses a ReadProperty request for efficiency. I will enhance the method to detect these properties. In the meantime, you can explicitly use a ReadPropertyMultiple request to retrieve "all" object properties.

Reply to Quick-Test Programm on Wed, 03 Mar 2010 05:37:51 GMT

dufy — Wed, 03 Mar 2010 05:37:51 GMT

Hello,

now with this code i get the following response:


ObjectIdentifier oid = new ObjectIdentifier(ObjectType.multiStateValue, 0);
            for (int i=1; i<2; i++) {
                PropertyReferences refs = new PropertyReferences();
                refs.add(oid, new PropertyIdentifier(79));
            
                PropertyValues pvs = localDevice.readProperties(d, refs);
                for (ObjectPropertyReference opr : pvs){
                    System.out.println(""+ i +": "+ pvs.getNoErrorCheck(opr));
                }
            }


1: Multi-state Value

The objectidentifier was wrong.

But with this code


  ObjectIdentifier oid = new ObjectIdentifier(ObjectType.multiStateValue, 0);
            for (int i=1; i<2; i++) {
                PropertyReferences refs = new PropertyReferences();
                refs.add(oid, PropertyIdentifier.all);
            
                PropertyValues pvs = localDevice.readProperties(d, refs);
                for (ObjectPropertyReference opr : pvs){
                    System.out.println(opr.getPropertyIdentifier() +" "+ i +": "+ pvs.getNoErrorCheck(opr));
                }
            }

i got this error message:


All 1: errorClass=Property, errorCode=Unknown property

How can i read now the object-properties from the multi-state-value?

Thanks for help

Reply to Quick-Test Programm on Tue, 02 Mar 2010 14:47:56 GMT

mlohbihler — Tue, 02 Mar 2010 14:47:56 GMT

It looks like the oid that you specified was not found. Are you sure you have a multistate output with an id of 0? You can request an object list to find out.

Also, your code would read a bit more easily of written like this:

            ObjectIdentifier oid = new ObjectIdentifier(ObjectType.multiStateOutput, 0);
            PropertyReferences refs = new PropertyReferences();
            refs.add(oid, PropertyIdentifier.all);
                
            PropertyValues pvs = localDevice.readProperties(d, refs);
            for (ObjectPropertyReference opr : pvs)
                System.out.println(""+ opr.getPropertyIdentifier() +": "+ pvs.getNoErrorCheck(opr));

Reply to Quick-Test Programm on Tue, 02 Mar 2010 06:47:42 GMT

dufy — Tue, 02 Mar 2010 06:47:42 GMT

Hello,

now i have deinstall the wago-bacnet driver and start the programm after a new boot. i think it works. No errors.
Now i get this output:

8: errorClass=Object, errorCode=Unknown object

what does it mean exactly?

thank for help:

Reply to Quick-Test Programm on Mon, 01 Mar 2010 17:31:20 GMT

mlohbihler — Mon, 01 Mar 2010 17:31:20 GMT

You are getting the first error (cannot bind) because the port you are trying to bind to (0xBAC0 by default) is already in use. This is probably because a previous test that you ran is still running and using the port. Make sure all test programs are terminated before running again.

The second error is because of this line (line 28, as the stack trace says):

RemoteDevice d = localDevice.getRemoteDevices().get(0);

You are asking for element 0, which apparently doesn't exist.