17
D
ISPLAY MODES
Operational Display Examples
Normal Counter Display with Input Activity
When the denominator is greater than the numerator, or a Quadrature input is deployed, the
display count may not always change with every state change on the inputs. In order to provide
the user with an indication of ‘activity’ on the inputs the centre decimal point of the 2 digit
display and the right hand decimal point of the 4 digit display will flash for 250mS each second
as is shown below.
2 Digit Display
4 Digit Display
Zero Display modes
In order to allow the user to precisely determine that the scaled count is exactly zero, rather than
a fractional value which displays as zero in the current display mode (Rounded or Truncated),
both the 4 and 2 digit display versions of the counter systems have particular means to indicate
the count is exactly zero. This explicit zero display mode may be enabled or disabled by the user
when using a 2 digit display.
In addition there are the overflow display modes, which look similar to zero, but are not, as
described above.
2 Digit Display
Scaled Value
Display
0
1 second
20% 80%
[0.]0
Value which logically displays as
zero
[-] [0.] 0
Overflow
o[.]0
4 Digit Display
Scaled Value
Display
0
No Sign displayed
Value which logically displays as
zero
Logical display with sign
Overflow
o[.]0[.]0[.]0
