Viconics VT8600 Series BACnet Integration Guide Manual do Utilizador descarregar pdf (Página 33)

VT8600 Series BACnet

Integration Manual

028-0437-00 www.viconics.com | sales@viconics.com March 2015

Note E1) Status objects.

Object examples in this category: BV36 / Filter Alarm, AV21 / PI Heating Demand. All status objects are

writable.

The behaviour is similar to the behaviour described in NOTE E with the following exceptions and changes

When writing and binding to the priority array 1 to 3, the controller WILL store and archive to ﬂash memory. As

soon as the new present value is received in priority array 1 to 3, the controller will use this new present value

in all its internal control logics and functions.

When writing and binding to the priority array 1 to 3, the controller internal control logics and functions ARE

bypassed the same way they are when writing to priority array 4 to 16. The controller will NOT operate with

its own present values, but will be forced to use the last write commands received on priority array 1 to 3 for

its built-in internal control logics and functions. HOWEVER, since writing to priority array 1 to 3 will store the

value in ﬂash memory, if a power reset occurs, the override type function will be maintained and the controller

will start to operate right away using the last value written to priority array 1 to 3.

The ONLY way to release the override due to the use of writing to priority array 1 to 3 is to send a write NULL

command to the proper priority array currently locking the controller. Only then will the controller start using the

relinquish default value and allow the user or installer to change values.

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Viconics VT8600 Series BACnet Integration Guide Manual do Utilizador Página 33