Trane BACnet Option Module, TR200 Real Time Clock Variable, Object Read Change- Non-vola

How to Control the Adjustable Frequency

Drive

Mailbox variable

Object		Read/	Change- Non-vola-			Alarm notifi-	Triggers Bus
	Object Name		able De-	tile RAM	Drive Par.
ID		Write	scription	Store		cation	Timeout
					PCV part of
MBV:0	Mailbox Write	W/R	No	Non	the send	No	No
					drive mes-
					sage
					PCV part of
MBV:1	Mailbox Read	R	No	Non	the receive	No	No
					drive mes-

sage

Real Time Clock Variable

The adjustable frequency drive has a built-in real-time clock. The standard real-time clock has no battery backup function (for real-time clock battery backup, selected TR200 option modules are available), which will lead to a time stop if the drive is unpowered. Some BACnet Masters can be programmed to send out the date and time as a broadcast message on a regular basis. The BACnet will update the real-time clock of the drive if it receives this type of message: “Message”.

5-14 TR200 BACnet