Honeywell VRX180 ユーザーズマニュアル

ページ / 294
Programming Function Blocks and Features 
 
Video Recorder – User Manual 
 
152
Display Setup Procedure 
Table 4-54 describes the display setup procedure. 
Table 4-54   Display Setup Procedure 
Step 
Action 
Select Program Displays from the Program mode menu. 
For each display format desired (trend, bar graph, panel display, unit data), specify points to be 
displayed. 
Assign up to 10 displays to the Display buttons. 
 
Set Up Trend 1 
Table 4-55 describes the trend display setup procedure. 
 
Table 4-55   Set Up Trend 1 Prompts 
 
 
Prompt 
Range/Selections 
Definition 
ENABLE 
Yes, No 
Enables or disables a specific trend. 
POINT #1  
POINT #12 
Analog or discrete 
parameters 
Select up to 12 analog or discrete points to be displayed as a 
vertical or horizontal trend. Trends of discrete points will 
show a value of 1 when ON and 0 when OFF. 
NORM TIME BASE 
5, 15, or 30 minutes, or 1, 2, 
4, 8, 24 hours, 7 days or  
31 days.  Equivalent paper 
chart speeds are listed in 
Table 4-56. 
Enter the trend display time base for Normal (typically slow 
speed).  The time base is the time period shown for one full 
screen. 
ALT TIME BASE 
5, 15, or 30 minutes, or 1, 2, 
4, 8, 24 hours, 7 days or 31 
days.  Equivalent paper 
chart speeds are listed in 
Table 4-56. 
Enter the trend display time base for Alternate (typically fast 
speed).  The time base is the time period shown for one full 
screen. 
SET DISPLAY 
LIMITS 
OFF or number 
Set the high and low full-scale display limits for each point. If 
you select OFF for a limit on this display, the limits 
programmed for the analog point (either RANGE LOW and 
RANGE HIGH or OUT LOW LIMIT and OUT HIGH LIMIT) will 
be used as the trend limits for that point. 
The accuracy of a trended point is determined only by the 
original output limits of the point, not by setting wider or 
narrower limits here. Setting excessively narrower limits here 
will result in a viewable trend with a high degree of 
inaccuracy when viewed as a % of the screen. To increase 
accuracy over a narrower range, decrease the programmed 
output range (limits) of the point itself. 
TIMEBASE 
SELECTOR 
OFF, discrete parameter, 0, 
Enter a discrete parameter which will cause trend to display 
alternate timebase when ON and normal timebase when 
OFF.