Rockwell Automation Arena Users Guide - Manual (Page 78)

A RENA U SER ’ S G UIDE
70
• •
•
•
•
Statistic module
D ESCRIPTION
The Statistic module is used to define additional statistics that are to be collected during
the simulation and also to specify output data files. While summary statistics (e.g.,
Average and Maximum) are automatically generated for each statistic, if you specify an
output file, then each individual observation (e.g., each tally recorded) is written out to an
output file. The types of statistics that may be defined in the Statistic module are time-
persistent, tallies (observational data), count-based, outputs, and frequency-based.
T YPICAL USES
„
Gathering observational data to compare two simulation configurations (save data to
file for a tally)
„
Collecting additional statistics information such as number in queue plus number
resources busy
„
Generating statistics on various states of an operator or machine
„
Tracking the number of customers in a grocery store using NSTO function and
Store/Unstore modules
P
ROMPTS
Prompt Description
Name The name of the schedule being defined. This name must be unique.
Type Type of statistic being defined. Type may be Time-Persistent (Dstat),
observational Tally-, Counter-, Output- or Frequency-based.
Tally Name Defines the symbol name for the tally. This name appears in the report as
the tally identifier. Applies only when Type is Tally.
Counter Name Defines the symbol name for the counter. This name appears in the
report as the counter identifier. Applies only when Type is Counter.
Expression Name of the time-persistent statistic, value of the output statistic or
expression for the frequency. For frequencies, if the Frequency Type is
State, this field is a resource name indicating that statistics are to be
collected on the state of a resource. If Frequency Type is Value, this field
simply specifies the expression on which statistics are to be collected.
Applies only when Type is Time-Persistent, Output, or Frequency.
Frequency Type Indicates whether statistics are being collected on the state of a resource
(State) or on an expression (Value). Applies only when Type is
Frequency.