system.bacnet

BACnet Functions

The following functions are used with the BACnet driver and a BACnet/IP device.

📄️ readRaw

Read from any BACnet object not explicitly supported by the BACnet driver.

📄️ readRawMultiple

This function is the bulk version of system.bacnet.readRaw to allow multiple object/property combinations to be read simultaneously from a single request.

📄️ synchronizeTime

Notifies the remote device of the correct current time, which is the system time (factoring in time zone and DST) of the server Ignition is running on.

📄️ synchronizeTimeUtc

Notifies the remote device of the correct current time in UTC.

📄️ writeRaw

Write to any BACnet object not explicitly supported by the BACnet driver.

📄️ writeRawMultiple

This function is the bulk version of system.bacnet.writeRaw by writing properties to objects provided equal-length lists of object types, object instance numbers, property IDs, values, priorities, and property array indices.

📄️ writeWithPriority

Write to the Present_Value attribute of an object with a custom priority level.

Functions by Scope

Gateway

• readRaw
• readRawMultiple
• synchronizeTime
• synchronizeTimeUtc
• writeRaw
• writeRawMultiple
• writeWithPriority

Perspective

• synchronizeTime
• synchronizeTimeUtc
• writeWithPriority

Constants

The system.bacnet function contains three packages (objectType, propertyId, and Enums) that reference Java classes. These references allow the classes to be imported through scripts without needing to know their full path. For example, both scripts below use system.bacnet to import the calendar object type without using from com.serotonin.bacnet4j.type.enumerated import ObjectType. See the system.bacnet.readRaw page for more details.

Example code using an import statement

from system.bacnet.enumerated import ObjectType
     
ot = ObjectType.calendar

Exmaple code not using an import statement

ot = system.bacnet.enumerated.ObjectType.calendar