6.2.2 Numerical
format
Display of numerical values
·
·
Real (i.e. fractional) values are displayed in the first line of the display consisting of 8 digits. Number is displayed
in floating point format as far as possible, otherwise an exponent notation is used. See examples below.
Floating format : 1234.5678, 100.00
Exponent format : 1234E-10, 12345E12
In most practical applications, it is very rare that parameters need be displayed in exponent format. The precision
(i.e. number of digits after the decimal point) is automatically decided depending on the unit in which the
parameter is being displayed.
For example pressure of 1.23456 Bar will be displayed in bar as “1.23” ( 2 digits after decimal point) & in mBar
as “1234.6” ( 1 digit after decimal point. Also, note the rounding - off of the last digit).
Input of numerical values
Entering a numeric value is very flexible. Enter a +ve or -ve number in floating point format or exponent format
as required or convenient.
Example : 1.2345678, -1234.567, 0.0001234
123456E1, -12345E4, 1234E-4
Programming : refer to section 5.4.
6.2.3 Display
Organisation -
Display consists of the following 3 fields.
Field 1
Field 2
Field 3
:
:
:
Numeric ( 8 digit, 7 segment) used primarily for showing numeric values.
alphanumeric (10 characters, 14 segments) used for showing units, messages etc.
Consists of [a] 6
t
markers at the bottom of display which are used to identify the parameter being
displayed and [b] key-field at the top left of the display which is used to acknowledge the keys.
Programming -
Measurement mode settings are as follow :
-
To allow selection of units for all measured parameters
Refer to Sect. 6.1
Fct. 1.2.1 to 1.2.6
-
Select what parameters to include in display cycle.
Refer to Sect. 6.1
Fct. 1.2.2 to 1.2.6
-
Select display mode (cyclic / non-cyclic) and error messages to / not to appear in display cycle.
Refer to Sect. 6.1
Fct. 1.2.6 to 1.2.7
Measurement mode
- Display shows measured parameter(s) in its selected unit. The
t
markers identify the
parameter being displayed. Parameter is displayed continuously in non-cyclic mode. [Refer sect. 6.1
Fct.
1.2.7
]. To select other parameter(s) of the display cycle, if any, use the
é
key. In cyclic mode, all the
parameters selected in the display cycle are displayed in sequence one after another every 6 seconds.
Programming mode
- Numeric line indicates menu/functions level such as
Fct. 1.0
[current menu level digit
“1” blinks] and alphanumeric line indicates menu/function title such as
OPERATION.
Error indications
- Blinking display in measurements mode indicates that error(s) are present. Error messages
are displayed interleaved between changing from one display parameter to other, if
Fct. 1.2.6 ERROR.MSG
is
YES.
For description of error messages refer Sect. 5.5.
Testing of display
- Use
Fct. 2.1 TEST DISP
for display test. All segments of the display are tested in the
following sequence. Alphanumeric field, numeric field, arrow and keymarkers. You can press the
E
key at
any time to terminate display test. Executing display test does not affect the normal operation of the signal
converter.
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