Auto-Zone Control Systems ZoneView Plus Software Manual (Version 01C) - Manual (Page 45)

ZoneView Plus
Computer Front End 39
If you had more than one communications loop and several units on each loop, the
numbers would change to indicate the selected unit.
Example #1: You saved data with the on-site computer for the 5 th Unit on the 3 rd Loop.
The file created would be named: OnSiteLog0305.LOG
Example #2: You saved data with a remote computer. You selected the 6 th phone
number from your phone list of remote job-sites and you selected the 15 th
Unit on the 2 nd Loop.
The file created would be named: RemoteLog0060215.LOG
The data is sorted and stored in chronological order with the oldest data first. You are
limited to the number of rows that EXCEL is capable of supporting, so if you tend to
gather lots of trend logs, you will need to perform periodic maintenance on the file to
keep it from growing too large to add new data to. If you notice the log retrieval getting
sluggish, you should either save the file to a different directory or filename so you don’t
lose any data or simply delete old and out of date data from the file. The larger the file,
the longer it takes to load and sort and then re-save back to disk.
All trend log items found in the spreadsheet have a column header that defines what the
data in that particular column represents. If the column displays Status or Relays, then the
information is generally BIT packed and must be manually extracted.
The numeric values in these bit packed columns are broken out as follows:
Example #1: Relays 1,2 & 3 are active
2 ^ (1 – 1) = 1
2 ^ (2 – 1) = 2
2 ^ (3 – 1) = 4
1 + 2 + 4 = 7 Relay Status would show a value of ‘7’ in this case.
Example #2: Relays 1 & 4 are active
2 ^ (1 – 1) = 1
2 ^ (4 – 1) = 8
1 + 8 = 9
Staging would show a value of ‘9’ in this case.