Denso Power Net Terminal BHT-7500 Especificações descarregar pdf (Página 126)

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Chapter 7. I/O Facilities

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Notes relating to the system status

Notes when the system status is displayed

The following statements and functions will cause somewhat different operations when the

system status is displayed.

•

CLS statement

The

CLS statement clears the VRAM area assigned to the bottom line of the LCD but does not

erase the system status displayed.

•

LOCATE statement

Even if you specify the bottom line of the LCD as the desired cursor position by using the

LOCATE statement, the cursor cannot move to the bottom line and it will move to the next to

the bottom line instead.

•

OUT statement

If you send graphic data to the VRAM area assigned to the bottom line of the LCD by using the

OUT statement, the sent data will be written into that VRAM area but cannot be displayed on

the bottom line.

•

INP function

If you specify the VRAM area assigned to the bottom line of the LCD as an input port, the INP

function reads one-byte data from that area.

Notes when displaying the system status with OUT statement

If the cursor is placed on any line except for the bottom line of the LCD: Specifying the system

status indication with the

OUT statement overwrites the system status on the current data

shown on the bottom line. If Kanji characters are shown on the bottom line, the lower half of

the Kanji is overwritten with the system status but with the upper half remaining on the LCD.

If the cursor is placed on the bottom line of the LCD: Specifying the system status indication

with the

OUT statement scrolls up the screen by one line together with the cursor and the sys-

tem status will appear on the new bottom line. (The number of columns does not change.)

Notes when erasing the system status with the OUT statement

Erasing the system status with the OUT statement displays the content of the VRAM area

(assigned to the bottom line of the LCD) on that part of the LCD.

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