Page 744 - ExtendSim User Guide
P. 744

718 Debugging Tools
Item Contents of queues and activities
Historical Log
In historical log mode, the first two columns of the Queue Equation and Resource Item blocks are fixed while the Queue block's first three columns are fixed. Clicking the green "+/-" resize button allows you to add more columns in order to track any number of additional attributes.
• Entry Time :records when an item entered the block and
• ExitTime:recordswhenanitemhasexited.Whenthecontentstableisinhistoricallog mode, items entering with quantities greater than 1 are represented in multiple rows because exit times for each exiting item must be recorded.
• Exit Point: describes how the item left the block; "Normal" means the item left via the ite- mOut connector, "Renege" means the item left via the renege connector.
Activity blocks
Contents
When the Activity is in current contents mode, the first 5 columns of the table are fixed. How- ever, clicking the green "+/-" resize button allows you to add more columns in order to track any number of additional attributes.
• Entry Time: records when the item entered the block.
• ShutdownStatus:willshowanitem'sshutdownstatus;a0whenanitemisnotshutdownand
a 1 when it is.
• Shift Status: will show whether the item's shift status; a 1 for on-shift and a 0 for off-shift.
• TimeDown:willrecordhowmuchtimetheitemspentinadownstatefrombothshutdowns and off-shifting.
• Finish Time: is the time the item finished processing. If an item does not have a value in the Finish Time column, then the item is still in processing. In current contents mode, since items are removed from the table when they leave, if a finish time appears for an item that means it has been blocked from leaving due to a downstream bottleneck. Otherwise, the item that has finished its processing time simply would not show up in the current contents table.
Historical Log
When the Activity is in historical log mode, the first 5 columns of the table are also fixed, but two of the columns differ from those found in the current contents table. The Entry Time, Time Down, and Finish Time columns hold the same type of information that the current con- tents table holds. The Exit Time column displays what time an item left the block. If a partic- ular item has a value in the Finish Time field but no Exit Time has been logged, then the item is currently blocked from leaving. The Exit Point column describes how the item left the block; "Normal" means the item left via the itemOut connector, "Preempt" means the item left via the prememption connector.
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