Rockwell Automation 1503VC IntelliVAC Plus Contactor Control Module - Manual (Page 315)

B-140 Parameters
1503-UM054C-EN-P – June 2013
Average Number of Operations per Time Unit on IB4
[IB 4 Reset Operations Since Counter]
Parameter Number: 271,224,_,_,_.
Access rule: Get/Set
Data Type: BOOL
Object Mapping: 0x384-4-33
Group: Diagnostics
Units: -
Minimum Value: 0 = No Operation
Maximum Value: 1 = Reset
Default Value: 0
This parameter allows the user to view and set the status of the Reset
“Operations Since” Counter for IB4. If the bit is a ‘0’ then No
Operation is performed on the Average Counting vs. Time update
feature for IB4. If the bit is a ‘1’ then a counter Reset is performed
whereby the present number of Close operations that have occurred,
on IB4, will be transferred to the Operations-4 Event Count, along
with the Date and Time. Likewise, the previous Operations-4 Event
Count, along with the Date and Time, will be transferred to the
Operations-4 Event Since -1, along with the Date and Time. Finally
the previous Operations-4 Event Count, along with the Date and
Time, will be transferred to the Operations-4 Event Since -2, along
with the Date and Time. This sequence is like a single ended queue
whereby the present counter value is stored in a location and the
previous data stored in that location is moved to another location,
and so on. This particular system uses a queue with three levels
whereby the highest level will always contain the latest Operations
Counter value along with the Date/Time and the second highest level
will contain the data that was in the highest level and finally the third
highest level will contain the data that was in the second highest
level. This system will provide that there will always be three sets of
Counter operation records for three discrete times. Thus, this feature
allows the user to monitor the number of Close operations that have
occurred over three discrete time periods for historical operation of
the contactor or for maintenance reasons. See “Operations Since”
Counter in Chapter 4 for a more detailed description of this feature.