Eurotherm 6100, Руководство пользователя

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100/180MM DISTRIBUTED GRAPHIC RECORDER: USER GUIDE
HA029324
Issue 11 Oct 14 Page 61
4.3.2 GROUP CONFIGURATION (Cont.)
A/B SWITCHING
If enabled, this function allows alternative values for Trend speed/interval and Recording speed/interval
to be entered. ‘A’ values are used during normal operation. ‘B’ values are switched-to by job action, as
described in
section 4.7.
TREND SPEED/TREND INTERVAL
Allows the ‘chart’ speed to be selected either as ‘mm per hour’ or ‘in per hour’, or as an interval. Enter-
ing a value in one fi eld automatically converts the value in the other fi eld. A trend interval of N seconds
is equivalent to 1200/N mm/hr chart speed; a chart speed of P mm/hr is equivalent to a trend interval of
1200/P seconds.
If A/B switching is enabled, a second Trend Speed /Interval value can be entered. Trend Speed/Interval
‘A’ is used during normal operation. Trend Speed/Interval ‘B’ is switched to by job action, as described
in
section 4.7 .
Note: Trend speed/interval are not editable fi elds if ‘Circular Settings’ is enabled.
CIRCULAR SETTINGS
When checked, this checkbox causes the Circular Speed/Chart Full/Start At fi elds, described below, to
appear. When checked, the Trend Speed and Trend Interval fi elds described above are disabled (i.e.
they are no longer editable).
Notes: If Circular Settings is not enabled, here in Group confi guration, but Circular Trend is
enabled for the group in Views confi guration (
section 4.3.4 ), then, although the circular chart will
appear, it is unlikely that the chart will contain any trends.
CIRCULAR SPEED
This fi eld allows the chart speed to be selected from a pick list, as detailed in table 4.3.2, below. The
table also shows the number of major and minor chart divisions.
CIRCULAR CHART FULL
This allows ‘New Chart’ or ‘Rotate’ to be selected from a picklist. See section 3.4.3 for details. Table 4.3.2
shows the major and minor chart divisions for each chart speed.
START AT
This item, (which appears only if ‘New Chart’ has been selected in ‘Circular Chart Full’, above) allows the
user to select a start time and/or date for the new chart. The exception is for a chart speed of 1 hr/rev,
which always starts on the hour.
Chart spd.
(1 rev per)
1 hour
2 hours
4 hours
6 hours
8 hours
12 hours
16 hours
1 day
2 days
1 week
2 weeks
4 weeks
30 days
Chart divs
Major Minor
12
12
12
12
8
12
8
12
12
7
7
4
30
2
2
2
2
2
2
2
2
2
4
4
7
0
New Chart Start at
On the hour
Day of week at
00:00:00
Day of week at
00:00:00
00 to 23 at
00:00 hrs
Start at choices Examples/comments
4 hours/rev.; Start at 12.
This chart will start at 1200 hrs and re-start at
1600, 2000, 2400, 0400, 0800 hrs etc.
2 days/rev.; Start Monday.
Chart starts Mon. 00:00:00 and restarts Weds, Fri etc,
At each power-on, the system resets to the first week
of the period, with the most recent 'Start at' day of the
week at the top of the chart.
Table 4.3.2 Circular chart speed details