The WriteDescription action sends a standard BACnet WriteProperty command to a BACnet object’s description property when an event item has been triggered.
Note: Some fields will be disabled if the selected trigger is a single action trigger.
This action only applies to the following event triggers:
•EventStart
•EventStop
•EventSetupStart
•EventSetupStop
•EventTeardownStart
•EventTeardownStop
•EventStartStop
•EventSetupTeardown
•ZoneFirstEventStart
•ZoneLastEventStart
•ZoneFirstSetupStart
•ZoneFirstTeardownStart
|
Field Name |
Description |
Range |
|
DeviceID |
The BACnet device id of the device that holds the point object that you want to command. |
0 <= deviceID < = 4194303 |
|
ObjectType |
Point type of the object |
Analog_Output, Analog_Value, Binary_Output, Binary_Value, Multistate_Output, Multistate_Value, Schedule |
|
ObjectID |
Unique object id of the BACnet object. |
0 <= objectID <= 4194303 |
|
Object Name |
The BACnet object name of the point. |
(read only) |
|
Start Value |
The description to write. Enter free text here for static text or the token [eventname] to send the event name that triggered the action. |
|
|
Stop Value (Dual actions only) |
The description to write at the end of the event. Enter free text here for static text. |
e.g. “No event scheduled” |
|
Max Length |
Maximum allowable number of characters in the description of the object. For descriptions that over this length, the description will be truncated and (...) will be appended to the end of the string. |
This length is dependent on the vendor of the devices your are writing to. If the max length is set to greater than the devices max length, then a BACnet error will be generated by the device. |
Verify Button
Click on the Verify button to verify that the selected object and property can be read directly using the BACnet ReadProperty service. The results of the verification will be shown in the Results window. The object name field is populated after verification
Test Start Button
Click on the Test Start button to attempt to write the defined value to the object using the BACnet WriteProperty service. The results of the test will be shown in the Results window. This only tests sending the static text of the start value. The [eventname] is not dynamically loaded.
Test Stop Button (Dual action triggers only)
Click on the Test Stop button to attempt to write the defined value to the object using the BACnet WriteProperty service. The results of the test will be shown in the Results window. This only tests sending the static text of the stop value. The [eventname] is not dynamically loaded.
Note: The Load, Verify, and Test buttons are only enabled and operational if the client application is enabled to use the BACnet client driver and the BACnet client has been setup properly.