10
4 Display Configuration Values
The TDD2 stores the displays configuration values in a non-volatile EEPROM. Values that are
changed via the front panel menu are not saved to the EEPROM until the user specifically requests they be
saved (see section 5.11). Zeroing the display (sections 4.7 and 4.8) will save the offset values to the
EEPROM immediately.
The display has a large set of parameters controlling its operation. The following is a
comprehensive list of settings, by category. For information on changing these settings via the front panel,
see section 3.34.9.1. For information on changing these settings via the RS-232/485 interface, see section
7.
4.1
Display Settings
The following setup items affect how the unit displays position values. These settings do not change
the operation of the TDD2 other than the appearance of the displayed value.
4.1.1
Decimal Places
The number of digits displayed after the decimal point can be configured to a value between 0 and
5. By default, 3 digits are displayed after the decimal point.
4.1.2
Display Update Rate
The display can be configured to update at a user-configured rate. This value can vary between 1
and 60 Hz. By default, the display is updated 25 times per second.
4.1.3
Leading Zeros Flag
The display can be configured to display or hide leading zeros. This option is either ON or OFF.
By default, leading zeros are not displayed.
4.1.4
Fractional Display Mode
The display can be configured to output the displayed value as a whole number and fraction
instead of displaying a decimal representation. This allows the operator to monitor position change using
familiar units, such as 32
nds
of an inch. When fractional display mode is enabled, the numerator of a fraction
is displayed after the decimal point. The denominator is not displayed – it is assumed to be known by the
operator. Possible denominators are 2, 4, 8, 16, 32, 64, 128, 256, or 512.
The
decimal places
configuration item controls the width of the displayed numerator. By default, 3
digits are used for the numerator display.
4.1.5
Peak Read Display Mode
The display can be configured to track and display the largest or smallest value received from the
sensor. This value can be reset to the current position at any time via serial command, button press, or
digital input activation.
4.2
Position Settings
The following setup items affect how the TDD2 calculates the displayed position from the sensor
output.
4.2.1
Units
The display provides with the following units: inches, feet, millimeters, centimeters, and meters. If
another unit choice is desired, it may be derived from one of the five basic units by using a scale value.
Changing the current units setting will affect most floating-point configuration values of the
TDD2. This can be used to enter values in alternate units. Simply select the alternate units, change one or
more settings, and change the units back to the normally desired units setting. The configuration value
changed will automatically be converted to the new units.
The default unit is inches.
Содержание TDD2
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