Omron CX-Supervisor, User Manual

Page: 169 / 334

Data Log Editor SECTION 11 Data Logging
168
within the deadband, the values are ignored. Immediately the value exceeds
the deadband limits the new value will be logged. This may dramatically
reduce file size, and ease analysis.
Entering a value of 0%, i.e. no deadband, will cause every sample to be
logged.
11-2-3-2 Sample Rate
The sample rate options are used to determine how data will be recorded,
select either on change or on interval. The default is interval.
When the On Change option is selected data will be logged only when the
value actually changes. This ensures all transient information is logged - even
if changes occur faster than maximum sample rate, and also ensures periods
of inactivity do not generate duplicated data.
The On Interval sample rate option enables the data values to be logged at
regular intervals. Enter the interval as a number and from the pick list select
the form, e.g. '5 Second'. This method guarantees the value is checked and
recorded at every interval. However transients occurring between sample
periods are not recorded, which depending on the application may be a
benefit.
11-2-3-3 Scale
The scale fields enable the graph upper and lower limits to be set and a scale
label entered for the selected item.
Enter the Minimum value as the lower limit to be shown on the graph for this
item.
Enter the Maximum value as the upper limit to be shown on the graph for this
item.
Enter the Scale Label to be displayed. This is a text field the contents of which
are displayed by the Y scale of the graph. The entry should be kept short but
also be logical for clarification.
11-2-4 Editing Items
11-2-4-1 Copy, Cut, Paste Options
The Copy, Cut and Paste options follow the windows convention and enable a
selected Item to be copied or cut from one Data Set Group and then pasted
into another. As Item names within a Data Set must be unique, when a copied
Item is pasted back into the same Data Set the name is given a numerical
suffix.
New or existing Items can be renamed and have their parameters edited by
high lighting the Item and then selecting the Edit option from the popup menu.
When the Modify Item dialog box appears edit the appropriate parameters in
the normal way.
11-2-4-2 Adding/Renaming Groups
The adding or renaming of Data Set groups follows the windows convention.
New Groups are added by selecting the Data Set to which the group is to be
added and then selecting the Add Group option from the popup menu. The
new Group is automatically placed in the correct position in the Data Set and
given a default group number. New or existing Groups can be renamed by first
high lighting the current group name and then selecting the Edit option from
the popup menu. When the edit box opens the name can then be edited in the
normal way. A maximum of 26 characters is allowed.