Document Version 1.2
Last revised on
2017-09-26
Page 59 of 92
Reference Manual for uTrust 4701F and uTrust 4711F Readers
6.3.4.7.
CNTLESS_SWITCH_RF_ON_OFF
This Escape command is used to switch the RF field ON or OFF when a contact smart card is inserted
into the reader. By default, the RF field is always in the ON state and when a contact smart card is
inserted in the reader, the RF field is turned OFF.
Input:
The first byte of input buffer contains the escape code.
The second byte either sets the mode or contains a code to retrieve the setting.
Byte0
Byte1
Output
Value
Description
Byte 0
Escape
code(0x9C)
0x00
Switch RF Field OFF when
contact card is present in the
reader
No Output
0x01
Leave RF Field ON when contact
card is present in the reader
No Output
0xFF
Get current field state
0x00 - RF is OFF when contact card
is present in the reader
0x01 - RF is ON when contact card
is present in the reader
After the RF is turned off, to turn the RF ON again, card connect has to be done in direct mode.
Output:
No response is returned for set state. For Get State 1 byte response is received.
Output buffer
NULL or current state
6.3.4.8.
CNTLESS_CONTROL_848
This Escape command can be used to enable/disable 848kbps support as well as query whether
848kbps is currently enabled or disabled.
The RF communication with a user token will only switch to 848Kbps if the user token supports this
baud rate and provided automatic PPS is ON.
The input buffer shall contain 2 bytes
Byte0
Byte1
Description
0x9D
0x00
Disable 848Kbps support
0x01
Enable 848Kbps support
0xFF
Get current status on 848Kbps support
If B1 of the input buffer is 0x00 or 0x01 then the output buffer is
Output buffer
NULL
