Technical data

List of all BACnet Properties in Native Operation • 281
Change_Of_State_Count
WAGO-I/O-SYSTEM 750
BACnet/IP Controller
6.10 Change_Of_State_Count
Data Type Unsigned
Objects Binary input, Binary output
Description This property, of the type Unsigned, represents the number
of times that the Present_Value property has changed state
since the Change_Of_State_Count property was most re-
cently set to a zero value. The Change_Of_State_Count
property has a range of from 0 to 65535 or greater. A
"change of state" is defined as any event that alters the Pre-
sent_Value property.
Binary Input:
When Out_Of_Service is FALSE, a change to the Polarity
property changes the Present_Value property and is there-
fore considered a change of state. When Out_Of_Service is
TRUE, changes to Polarity do not cause changes of state. If
one of the optional properties Change_Of_State_Time,
Change_Of_State_Count, or Time_Of_State_Count_Reset
is present, then all of these properties must be present.
Binary Output:
A change in the Polarity property is not regarded as a
change of state. If one of the optional properties
Change_Of_State_Time, Change_Of_State_Count, or
Time_Of_State_Count_Reset is present, then all of these
properties must be present.
6.11 Change_Of_State_Time
Data Type BACnetDateTime
Objects Binary input, Binary output
Description This property, of the type BACnetDateTime, represents the
date and time at which the most recent change of state oc-
curred. A "change of state" is defined as any event that al-
ters the Present_Value property.
Binary Input:
When Out_Of_Service is FALSE, a change to the Polarity
property changes the Present_Value property is therefore
considered a change of state. When Out_Of_Service is
TRUE, changes to Polarity shall not cause changes of state.
If one of the optional properties Change_Of_State_Time,