COV Implementation in BACnet Server

[Raveesh]

Hi,

I am trying to implement COV(Change Of Value)  functionality in Bacnet Server using “bacnet4j” java library.

Scenario (1 ) : Java code to SubscribeCOV to Object  “analog input” :

ObjectIdentifier oid = new ObjectIdentifier(ObjectType.binaryInput, remoteDevice.getInstanceNumber());
SubscribeCOVRequest req = new SubscribeCOVRequest(new UnsignedInteger(0), oid, new Boolean(true),new UnsignedInteger(0));
localDevice.send(remoteDevice, req));

But I am getting following exception :
com.serotonin.bacnet4j.exception.ErrorAPDUException: ErrorAPDU(choice=5, errorClass=Object, errorCode=Unknown object)

Scenario (2 ) : Java code to SubscribeCOV to Property  “present value”  in object  ”binary input”:

ObjectIdentifier oid = new ObjectIdentifier(ObjectType.binaryInput, rd.getInstanceNumber()); 
SubscribeCOVPropertyRequest req=new SubscribeCOVPropertyRequest(new UnsignedInteger(1), oid, new Boolean(true), new UnsignedInteger(0), new PropertyReference(new PropertyIdentifier(85)), new Real((float) 1.23));
localDevice.send(remoteDevice, req));

But I am getting following exception :
com.serotonin.bacnet4j.exception.RejectAPDUException: Reject(originalInvokeId=0, rejectReason=9)

Please correct me, if I am wrong.
Can anyone tell whether BACnetServer supports SubscribeCOV Object &  SubscribeCOVProperty ? If yes, then How to do it? or What to modify in the code?

Any further response would be highly appreciated. !!

Thanks,
Raveesh.

[Raveesh]

Hi,
Sorry for the mistake in above query.
Actually, BinaryInput Object was subscribed in BACnet Server.

Query after correction :

I am trying to implement COV(Change Of Value) functionality in Bacnet Server using “bacnet4j” java library.
Scenario (1 ) : Java code to SubscribeCOV to Object “analog input” :
ObjectIdentifier oid = new ObjectIdentifier(ObjectType.analogInput, remoteDevice.getInstanceNumber()); SubscribeCOVRequest req = new SubscribeCOVRequest(new UnsignedInteger(0), oid, new Boolean(true),new UnsignedInteger(0));
localDevice.send(remoteDevice, req));

But I am getting following exception :
com.serotonin.bacnet4j.exception.ErrorAPDUException: ErrorAPDU(choice=5, errorClass=Object, errorCode=Unknown object)

Scenario (2 ) : Java code to SubscribeCOV to Property “present value” in object ”binary input”:
ObjectIdentifier oid = new ObjectIdentifier(ObjectType.binaryInput, rd.getInstanceNumber()); SubscribeCOVPropertyRequest req=new SubscribeCOVPropertyRequest(new UnsignedInteger(1), oid, new Boolean(true), new UnsignedInteger(0), new PropertyReference(new PropertyIdentifier(85)), new Real((float) 1.23)); localDevice.send(remoteDevice, req));

But I am getting following exception :
com.serotonin.bacnet4j.exception.RejectAPDUException: Reject(originalInvokeId=0, rejectReason=9)

According to my perspective :-
(1) Only binaryInput object is supported in BACnet Server. Rest are not supported.
(2) SubscribeCOVProperty is not supported in BACnet Server.

Please correct me, if I am wrong.
If Subscription of COV is possible in BACnet Server , then Please suggest How to check it ? as writeProperty functionality is not supported in BACnet Server.

Any further response would be highly appreciated. !!

Thanks,
Raveesh.

[y g]

Have you got suceeded with it?