ACR1281U-C1 – Application Programming Interface
Version 1.08
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Page 78 of 96
5.3.10.
Set automatic PICC polling
This command sets the reader’s polling mode.
Whenever the reader is connected to the computer, the PICC polling function will start the PICC
scanning to determine if a PICC is placed on/removed from the built-in antenna.
You can send a command to disable the PICC polling function by sending a command through the
PC/SC Escape Command interface. To meet the energy saving requirement, special modes are
provided for turning off the antenna field whenever the PICC is inactive, or no PICC is found. The
reader will consume less current in power saving mode.
Command
Command
Class
INS
P1
P2
Lc
Data In
Set Automatic PICC Polling
E0h
00h
00h
23h
01h
Polling Setting
Response
Response
Class
INS
P1
P2
Le
Data Out
Result
E1h
00h
00h
00h
01h
Polling Setting
Where:
Polling Setting
(1 byte)
Default value = 8Fh
Polling
Setting
Description
Description
Bit 0
Auto PICC Polling
1 = Enable
0 = Disable
Bit 1
Turn off Antenna Field if no PICC found
1 = Enable
0 = Disable
Bit 2
Turn off Antenna Field if the PICC is inactive
1 = Enable
0 = Disable
Bit 3
RFU
RFU
Bit 5 – 4
PICC Polling Interval for PICC
Bit 5 – Bit 4:
0 – 0 = 250 ms
0 – 1 = 500 ms
1 – 0 = 1000 ms
1 – 1 = 2500 ms
Bit 6
RFU
RFU
Bit 7
Enforce ISO 14443A Part 4
1 = Enable
0 = Disable
Notes:
1. It is recommended to enable the option “Turn off Antenna Field is the PICC is inactive,” so
that the “Inactive PICC” will not be exposed to the field all the time to prevent the PICC from
“warming up.”