GAL GALaxy eHydro Manual page 75

GALaxy eHydro Elevator Controller
5.2.1.4 Trace Display
The controller continually stores 168 bytes of critical data every 20 milliseconds (can be changed to 10,
20, 30 or 40) in a 500-frame circular trace buffer. This continues until a command is given to stop
storing data in which 35 additional frames are stored and then the update is stopped. The purpose of
this buffer is to capture 465 frames of data prior to an event and then 35 frames after the event. The
frame number of the trace screens being displayed is show as the trace index (tix) and it ranges from 0
to 499. When the trace screens are initially displayed, the index will start at 464, the frame where the
command to stop was made.
To navigate the trace screens, press the UP or DOWN buttons to change to the next screen. To
increment to the next trace frame, press the ENTER button. Pressing the ENTER button will cause the
trace index to increment by 1. To increment or decrement quickly through each frame, press and hold
the ENTER button and then press the UP button to increment the index by 10 or the DOWN button to
decrement by 10. When viewing the trace screens, keep in mind that the data is not live but recorded.
Also, on the initial trace screen, the trace index (tix=) is displayed as part of that screen. On all other
trace screens, the trace index pops up while pressing the ENTER button but goes away to allow viewing
of the entire screen.
Figure 5-8:
Section 5 – LCD Interface
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