ACR122L – Communication Protocol
Version 1.03
www.acs.com.hk
Page 30 of 57
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.
6.7. Scroll Current LCD Display
This command is used to set the scrolling feature of the current LCD Display.
Scrolling LCD Command Format (5 Bytes + LCD Message Length)
Command
Class
INS
P1
P2
Lc
Data In (6 Bytes)
Scroll LCD
FFh
00h
6Dh
00h
06h
Scroll Ctrl
Data In
Scroll Ctrl.
Scrolling Control Format (6 Bytes)
Byte 0 Byte 1 Byte 2 Byte 3
Byte 4
Byte 5
00h
00h
0Fh
1Fh
Refresh Speed Ctrl
Scrolling Direction
Where:
Refresh Speed Ctrl
Bit 0 ~ Bit 3 – Number of pixels to move per scroll.
Bit 4 ~ Bit 7 – Scrolling period.
Bit 7
Bit 6 Bit 5 Bit 4
Scrolling Period
0
0
0
0
1 Unit
0
0
0
1
3 Units
0
0
1
0
5 Units
0
0
1
1
7 Units
0
1
0
0
17 Units
0
1
0
1
19 Units
0
1
1
0
21 Units
0
1
1
1
23 Units
1
0
0
0
129 Units
1
0
0
1
131 Units
1
0
1
0
133 Units
1
0
1
1
135 Units
1
1
0
0
145 Units
1
1
0
1
147 Units
