WAGO 750-830 Manual page 155

3.1.12.2.4 Binary Output Object
The Binary Output object defines a standardized object whose properties rep-
resent the externally visible characteristics of a binary output. A "binary out-
put" is a physical device or hardware output that can be in only one of two dis-
tinct states. In this description, those states are referred to as ACTIVE and
INACTIVE. A typical use for a Binary Output is the switching of a mechani-
cal device, for example a ventilator or a pump. The state ACTIVE corresponds
to the situation when the equipment is on or running, and INACTIVE corre-
sponds to the situation when the equipment is off or idle.
In some applications, electronic circuits may reverse the relationship between
the application-level logical states ACTIVE and INACTIVE and the physical
state of the underlying hardware. For example, a normally open relay contact
may result in an ACTIVE state (device energized) when the relay is energized,
while a normally closed relay contact may result in an ACTIVE state (device
energized) when the relay is not energized. The Binary Output Object pro-
vides for this possibility by including a Polarity property.
The Binary Output Object and its properties are summarized in Tab. 3-31. The
properties are described in section 6.
Tab. 3-31: Properties of the Binary Output Object
Property
Object_Identifier
Object_Name
Object_Type
Present_Value
Description
Device_Type
Status_Flags
Event_State
Reliability
Out_Of_Service
Polarity
Inactive_Text
Active_Text
Change_Of_State_Time
Change_Of_State_Count
Time_Of_State_Count_Reset
Elapsed_Active_Time
Time_Of_Active_Time_Reset
Minimum_Off_Time
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
BACnet/IP Controller 750-830
BACnet Building Controller (B-BC)
Data type:
BACnetObjectIdentifier
CharacterString
BACnetObjectType
BACnetBinaryPV
CharacterString
CharacterString
BACnetStatusFlags
BACnetEventState
BACnetReliability
BOOLEAN
BACnetPolarity
CharacterString
CharacterString
BACnetDateTime
Unsigned
BACnetDateTime
Unsigned32
BACnetDateTime
Unsigned32
Default Value Writable via BACnet
by means of
- -
Binary_Output_X -
BINARY_OUTPUT -
- -
*see footnote WriteProperty
' ' WriteProperty
'000' -
State_Normal (0) -
0 WriteProperty
'0' -
0 WriteProperty
"inactive" WriteProperty
"active" WriteProperty
UNSPECIFIED -
0 -
UNSPECIFIED -
0 -
UNSPECIFIED -
1 WriteProperty
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