ACS ACR122L, User Manual

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ACR122L – Communication Protocol
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Version 1.03
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Page 32 of 57
6.9. Stop LCD Scrolling
This command is used to stop the LCD scrolling that has been previously set. The LCD display will
return to normal display position.
Stop Scrolling LCD Command Format (5 Bytes)
Command Class INS P1 P2 Lc
Stop Scroll LCD FFh 00h 6Fh 00h 00h
Data Out
SW1 SW2.
Status Code
Results SW1 SW2 Meaning
Success 90 00h The operation is completed successfully.
Error 63 00h The operation is failed.
6.10. Clear LCD
This command is used to clear all contents shown in the LCD.
Clear LCD Command Format (5 Bytes)
Command Class INS P1 P2 Lc
Clear LCD FFh 00h 60h 00h 00h
Data Out SW1 SW2.
Status Code
Results SW1 SW2 Meaning
Success 90 00h The operation is completed successfully.
Error 63 00h The operation is failed.
Note: For ACR122L firmware versions 307 and above, using the Clear LCD function successively
with other LCD functions requires the application to handle an additional 100 ms time delay.
6.11. LCD Backlight Control
This command is used to control the LCD backlight.
LCD Backlight Control Command Format (5 Bytes)
Command Class INS P1 P2 Lc
LCD Backlight Control FFh 00h 64h Backlight Control 00h