
Programming the Enhanced Monitor
71
Chapter 3
HISTory:QUEue:COUNt?
HISTory:QUEue:COUNt?
returns the number of history events in the history
queue.The maximum number of events capable of being stored in the history queue
varies from 500 to 1000 depending on the type of events stored.
Returned Data
Comments
•
HIST:QUE:COUN?
determines the maximum number accepted by the
HIST:QUE:FETC?
command.
Error Conditions
The following table lists the most common error conditions and causes. Error
numbers and corresponding messages can be found using
SYSTem:ERRor?
query.
Reset Condition
A *RST has no effect on the HISTory subsystem.
Related
Commands
HISTory:QUEue[:FETCh]?, HISTory:RESet:QUEue, HISTory:UNITs[:TIME],
HISTory:UNITs[:TIME]?
Type
Range
Default
Description
uint16
0 through 1000
none
The count of history events presently in the history
queue.
Number
Message
Probable Cause
-311
“Memory error”
The history queue’s memory is not available.
Summary of Contents for E8402A
Page 8: ...10 Contents ...
Page 12: ...14 Notes ...
Page 14: ......
Page 26: ...28 Getting Started Chapter 1 ...
Page 42: ...44 Using the Enhanced Monitor Chapter 2 ...
Page 214: ...216 Servicing Your Mainframe Chapter 5 ...
Page 226: ...228 HP E8402 E8404A Product Specifications Appendix A ...