Mercury 2+, Руководство пользователя

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Mercury 2+ Operator Terminal User Manual Page 29 of 82 2019r0
In character display or text mode, the LCD offers a display of eight
lines high by 40 characters long. Using standard size characters,
line wrap is automatic and operates in page format. So after a
character has been placed at the end of line eight, in the bottom
right corner of the LCD, the cursor goes to the top of the screen
again, overwriting line 1. Graphics mode display is detailed on
page 41.
The keypad is programmed for standard or customised key set. A
click is audible each time a key is pressed (this option can be
disabled), and confirms operation. Standard keypad layout is
illustrated in Figure 4, showing numeric / command symbols in
larger type and alphabet keys in smaller type.
Liquid Crystal
Display
Operation
Keypad
Fig. 4
Standard Keypad
Layout
Keyboard Modes
There are three keyboard modes ­ Uppercase characters (U),
Lowercase characters (L) and Numeric/Command (N). The
current keyboard mode, U, L or N, is shown in the bottom right
corner of the LCD.
Note that certain keypad types may not support all keyboard
modes. For exampe, the TA keypad supports only Uppercase and
Numeric modes.
Press SHIFT to display the next keyboard mode. Press SHIFT
again for the next keyboard mode. A third SHIFT key press returns
the display to the original keyboard mode.
The capability to change keyboard mode using the SHIFT key can
be disabled/enabled from the master device (see page 35).
A full list of standard characters for each keyboard mode, together
with their hexadecimal values, is shown in Table 2.