Quest Controls BACnet T-Stat Manual de Serviço descarregar pdf (Página 300)

300 • List of all BACnet Properties in Native Operation

Present_Value

WAGO-I/O-SYSTEM 750

BACnet/IP Controller

Binary Output:

For this object, the property of the type BACnetBinaryPV

indicates the logical state of the Binary Output. The logical

state of the output is either INACTIVE or ACTIVE. The re-

lationship between the Present_Value and the physical state

of the output is determined by the Polarity property. Possi-

ble states are summarized in Tab. 6-9.

Tab. 6-9: Interrelationships for BACnet Polarity (Binary Output)

Present_Value Polarity Physical state of

the output

Physical state of

device

INACTIVE NORMAL OFF or INACTIVE Not in operation

ACTIVE NORMAL ON or ACTIVE In operation

INACTIVE REVERSE ON or ACTIVE Not in operation

ACTIVE REVERSE OFF or INACTIVE In operation

Analog Input:

This property, of the type REAL, indicates the current value,

in engineering units, of the input being measured. The Pre-

sent_Value property must be writable when Out_Of_Service

is TRUE.

Analog output:

This property, of type REAL, indicates the current value, in

engineering units, of the output.

Schedule:

This property indicates the current value of the schedule.

This can be any primitive data type. As a result, most ana-

log, binary, and enumerated values may be used. This prop-

erty must be writable when Out_Of_Service is TRUE (see

section 6.56, "Out_of_Service").

Any change in the value of this property shall be written to

all members of the List_Of_Object_Property_References

property. An error writing to any member of the list shall

not stop the Schedule object from writing to the remaining

members.

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Quest Controls BACnet T-Stat Manual de Serviço Página 300