===== VLC DDC BV and AV assignments =====

Each VLC has a number of pre-assigned data points -- binary and analog values (BVs and AVs) -- which are used to control the Microset II and read status from it. These data points are available from the VLC as BACnet objects. BACnet-compliant devices can access the properties of these objects. For a complete reference of objects and properties available in VLCs, see the //Programmer's Guide and Reference for BACtalk Systems // (LTBT-TM-PRGRMR).

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|  Note  |The following tables reflect only with the Present Value property of the AV and BV objects. These are listed as data points.|

==== BV assignments ====


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^  Point  ^  Read only  ^  Description  ^  On action or status  ^  Off action or status  ^
|  BV64  |  NA  |Controls occupied/unoccupied or rented/vacant status (see [[devices:microset:ddc-operating-modes|DDC operating modes]])|Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  BV65  |  NA  |Sets On/Off mode (see [[devices:microset:ddc-operating-modes|DDC operating modes]])|Enables On/Off mode|Disables On/Off mode|
|  BV66  |  ✔  |Override status. Activated in unoccupied or vacant modes when the user initiates override from the Microset II|On when override timer (AV98) is non-zero|Off when the override timer (AV98) is zero|
|  BV67  |  ✔  |Occupied status. Reflect the value of BV64 or BV66. Also reflects user selection of On/Off mode when BC64 is On (see [[devices:microset:ddc-operating-modes|DDC operating modes]])|Space is occupied. Current setpoint values (AV99, AV100) are calculated using occupied logic|Space is unoccupied. Current setpoint values (AV99, AV100) are calculated using unoccupied logic|
|  BV68  |  NA  |Field service mode and balance mode lockout|Lock out both field service and balance modes|Allow either field service or balance mode|
|  BV69  |  NA  |English/metric mode swap (see[[devices:microset:mode-swap-measure|DDC operating modes]]|Swap native units mode between English and metric|Uses units as determined by VLC native units|
|  BV70  |  ✔  |Microset connection status|Microset detected|Microset not detected|
|  BV71  |  ✔  |Native unit mode status from the native mode set in the VLC DDC header|English units|Metric units|
|  BV72((DDC can write to these BVs. They are also affected by the occupant selection of fan speed. Only one of these BVs can be ON at once; otherwise, the fan displays high fan status. When fan is OFF, these BVs are OFF.)) ((Not available in VLC versions 1.06c and earlier. See “Compatibility with Earlier Version VLCs”))|  NA  |Fan low speed|Enable fan low speed status indicator at Microset II| |
|  BV73((DDC can write to these BVs. They are also affected by the occupant selection of fan speed. Only one of these BVs can be ON at once; otherwise, the fan displays high fan status. When fan is OFF, these BVs are OFF.)) ((Not available in VLC versions 1.06c and earlier. See “Compatibility with Earlier Version VLCs”))|  NA  |Fan medium speed|Enable fan medium speed status indicator at Microset II| |
|  BV74((DDC can write to these BVs. They are also affected by the occupant selection of fan speed. Only one of these BVs can be ON at once; otherwise, the fan displays high fan status. When fan is OFF, these BVs are OFF.)) ((Not available in VLC versions 1.06c and earlier. See “Compatibility with Earlier Version VLCs”))|  NA  |Fan high speed|Enable fan high speed status indicator at Microset II| |
|  BV,,,  |  NA  |And there are more descriptions|more On statuses|and more Off statuses|





==== AV assignments ====

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^  Point  ^  Read only  ^  Description  ^  On action or status  ^  Off action or status  ^
|  AV90  |  NA  |Controls occupied/unoccupied or rented/vacant status (see [[devices:microset:ddc-operating-modes|DDC operating modes]])|Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  AV91  |  NA  |Sets On/Off mode (see [[devices:microset:ddc-operating-modes|DDC operating modes]])|Enables On/Off mode|Disables On/Off mode|
|  AV92  |  NA  |Controls occupied/unoccupied or rented/vacant status|Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  AV93  |  NA  |Controls occupied/unoccupied or rented/vacant status|Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  AV94  |  NA  |Controls occupied/unoccupied or rented/vacant status|Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  AV95  |  NA  |Controls occupied/unoccupied or rented/vacant status |Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|
|  AV96  |  NA  |Controls occupied/unoccupied or rented/vacant status |Sets Microset II to occupied or rented operation|Sets Microset II to unoccupied or vacant operation|