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Write single object
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1. Install Node Bacnet-contrib-exteneded
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2. create flow
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3. Put the below in function block
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var value= msg.payload
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msg.deviceId = # ;
Replace # with the instance number of the bacnet device you want to write to
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msg.address = "#";Replace # with the IP Address of the Bacnet device
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msg.objectId = { type: #, instance: * };Replace # with object ID type number for tab below
Replace * object type instance number
(if you have 5 Binary Value objects they may be numbered 1-5 for example)
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msg.propertyId = 85;85 is the property number for present value
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msg.values = [{ type: #, value: value }];Replace # with message value type number from tab below
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return msg;
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Read single Object
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1. Create flow
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2. Put the below in first function block
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msg.deviceId = #;
Replace # with the instance number of the bacnet device you want to read from
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msg.address = "#";Replace # with the IP Address of the Bacnet device
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msg.inputType = 5;Replace # with object ID type number for tab below
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msg.bacnetID = 138;Replace * object type instance number
(if you have 5 Binary Value objects they may be numbered 1-5 for example)
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const bacnetProperties = [
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 { id: 77 }, // OBJECT_NAME
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 { id: 79 }, // OBJECT_TYPE OR INPUT TYPE
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 { id: 85 }, // PRESENT_VALUE
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];
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const requestArray = [
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{ objectId: { type: msg.inputType, instance: msg.bacnetID }, properties: bacnetProperties }
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];
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msg.requestArray = requestArray
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return msg;
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3. Copy the below in to the "data transformation" function block (no changes needed)
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var object = msg.payload;
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var myArray = {};
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myArray["BacnetID"] = msg.bacnetID;
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myArray["InputType"] = msg.inputType;
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for(var j = 0; j < object.values[0].values.length; j++){
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 var k1 = object.values[0].values[j].id.toString();
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 //str = str + k1 + " ----- ";
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 var v1 = object.values[0].values[j].value[0].value;
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 var k1str = ConvertPropertyIdWithString(k1);
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 myArray[k1str] = v1;
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}
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//msg.payload = str;
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msg.payload = myArray;
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return msg;
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function ConvertPropertyIdWithString(id){
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