Micromod MOD: 30ML Display Script Guide - Manual (Page 53)

MOD 30ML Display Guide
Special Effects
4.3 Auto-Scrolling Displays
The MOD 30ML can scroll automatically and continuously through all displays in the
Display List, with the option of manual intervention to stop and re-start the scroll action.
If the operator must be able to stop the scrolling in order to view or operation the display,
it is essential to choose a key that is NOT being used by the display for any other purpose.
For example, a standard PID display uses the MAN, AUTO and SCROLL keys for
operating the loop. If there is no remote setpoint, the R/L key is a good choice for
operating the scrolling action.
Although Display Blocks can be placed outside Loop Compounds, in this case they must
be placed within a Loop Compound in order to control the rate at which they scroll. The
Scan Group in the Interface Block must be set to allow a reasonable viewing period of
each display before changing to the next one. If the display blocks are in Group 1 and the
Group 1 Scan Rate is set to 2 seconds, the displays will scroll at that rate.
An example of scrolling displays with manual stop/start is given in Chapter 5.
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