What is the BACnet WriteProperty Format? Key Takeaways : What is the BACnet WriteProperty Format? WriteProperty is the BACnet service used to modify the value of an object’s property on a remote device. It enables Building Management Systems (BMS) to control parameters such as setpoints, operating modes, or schedules. The message includes at least: Object Identifier, Property Identifier, and Property Value (with optional Array Index and Priority). The service is transmitted through either a...