Publication 1404-UM001D-EN-E - October 2004
Data Logging
7-13
Table A.22 Trend Log Results is a read-only table of 14 (DeviceNet) or
22 (all other communications options) floating-point elements as
follows:
•
Reserved element:
returns 0
•
Internal identifier:
increments by 1 to 15 for each trend log
record then rolls over to 0
•
Time stamp:
in 4-element timestamp format. See page 3-28.
•
User-selected parameters:
parameters you selected when you
configured the Trend Log.
Min/Max Log
The
Min/max Log
maintains a time-stamped record of the minimum
and maximum values of up to 74 metering parameters. You can
monitor values over a day, a week, a month or any period to record
the highest and lowest values of voltage, current, power factor, etc.
Most industrial utility bills include a charge based on the maximum
demand recorded during the billing period. You could use the
Min/max log to provide that piece of data for generating an internal or
shadow billing report.
Accessing the Min/Max Log Using the Display Module
To view log entries, navigate through these menus:
DISP.
>
LOGS
>
MIN/MAX LOG
. The first log record title will appear,
M.M.LOG AMPS
L1
. Press the
Enter
key and the record data will scroll across the
display:
MIN #.### MM/DD/YYYY hh|mm MAX #.### MM/DD/YYYY
hh|mm
. Pressing any key will return to the record title display, then
you may press the
Up Arrow
or
Down Arrow
keys to select the next
record you wish to view. Refer to Table 7.3 for a complete list of
Min/max log parameters.
Configuration:
You may choose to enable or disable the Min/max log
using the Display Module by navigating these menus:
PROG.
>
PASS?
>
CONFIGURATION
>
MIN/MAX LOG
, and selecting
ON
or
OFF
using the arrow keys and the
Enter
key. You may also make this
selection using communications.
Clearing the Log:
You may clear the Min/max log using the Display
Module by navigating these menus:
PROG.
>
PASS?
>
COMMANDS
>
MIN/MAX LOG CLEAR
. Press the
Up Arrow
or
Down Arrow
key until
Yes
appears, then press the
Enter
key. You may also clear the
Min/max Log using communications.
Содержание 1404-M4
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Страница 354: ...Publication 1404 UM001D EN E October 2004 6 Index ...
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