Interactive Programming Mode
4-37
4
Function Name
RF_Read
<TYPE> <CMD>: \0A\13 + Prms
Description
This function reads the data from a specific tag using the Tag ID. The read parameters
for this function are included with the command. Unlike the RF_Auto_Run command,
the parameters present in the NVM are not used and are not affected with this
command.
Parameters
Byte count [1 - 128] (number of bytes to be read, hex format). Sum of byte count and
starting address must not exceed 128.
ID [8]: tag ID in hex format
Address [0 - 127]: start address to be read in hex format. Sum of byte count and starting
address must not exceed 128.
For example, 40-byte read (0x28);
ID = 00004A4E408C8005;
address = byte 24 (0x18);
0A\13\28\00\00\4A\4E\40\8C\80\05\18 0x7F 0x15(NAC)
Responses
Successful Read:
ASI frame (accept the function and sending information) + data frame after a success:
<ASI> <IMC> <RF_Read function> <RF_Read_OK>
0x03 0x0A 0x13 0x72
<BFR> <[Preamble]> <[AIM_ID]> <Tag_ID> <Data> <[Postamble]>
Unsuccessful Read:
03 0A 14 00 - No response from RF module
ASI frame (accept the function and sending information) + error status:
<ASI> <IMC> <RF_Read function> <RF_Read_Error>
0x03 0x0A 0x13 0x74
Note:
If the product is powered by battery and a low-battery status is detected, the
product will send a PEV frame.
PEV frame: <PEV> <Event number>, with event number = battery discharged (0x10)
IEC (IMC not activated)
Table 4-24 RFID Function Commands (continued)
Содержание Sabre 1555
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Страница 21: ...2 Getting Started ...
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