Title: DOCA0005EN-12.pdf
Communications via BACnetChapter 8 Communications via BACnetBACnet communications overviewCommunications via BACnet MS/TP protocol is available on the iEM3165, iEM3265, iEM3365, iEM3465 and iEM3565.The information in this section is intended for users with an advanced understanding of BACnet protocol, their communications network and their power system.Key termsTermDefinitionAPDUApplication protocol data unit, that data portion of a BACnet message.Confirmed messageA message for which the device expects an answer.COVChange of value, sets the amount by which a value has to change in order for the meter to send a subscription notification.DeviceA BACnet device is a unit that is designed to understand and use BACnet protocol (for example, a BACnet-enabled meter or software program). It contains information about the device and device data in objects and object properties. Your meter is a BACnet device.MS/TPMaster-slave/token-passing over RS-485.Object