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Note that we've specified the value in hexadecimal (-1066) but the display always shows decimal (-4198).
pbFORTH provides two words that show or hide individual display segments, basically everything except the numbers:
LCD_SHOW (segment -- )
LCD_HIDE (segment -- )
These words show or hide the given display segment. Valid values are shown in Table 6-7. The values that are flagged as a sequence can be repeatedly called to update the display automatically.
For example, the datalog indicator (3018) consists of four quarters of a circle. The first time you show 3018, you'll see one quarter. Show 3018 again, and a second quarter lights up. Do this three
more times, and the third quarter lights up, the fourth quarter lights up, and then all the quarters go blank and the sequence begins again.
Table 6-7. LCD Segment Numbers
Segment Number
(hexadecimal)
Sequence? Description
3006 no Standing figure
3007 no Walking figure
3008 no Input 1 selected
3009 no Input 1 active
300A no Input 2 selected
300B no Input 2 active
300C no Input 3 selected
300D no Input 3 active
300E no Output A selected
300F no Output A backward
3010 no Output A forward
3011 no Output B selected
3012 no Output B backward
3013 no Output B forward
3014 no Output C selected
3015 no Output C backward
3016 no Output C forward
3018 yes (4) Datalog indicator segments
3019 yes (5) Data transfer segments (ascending)
301A yes (5) Data transfer segments (descending)
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