•
Endian 2
– every Modbus Holding Register contains 2 byte of data.
Example
:
If Tag block 0 has first two bytes: MSB:0x55 LSB:0xAA, than Modbus Reg
0(+Buffer Memory offset) contain 0xAA55
Endian 1 and 2 can reduce data transfer between RFID Reader and Master Controller
(PLC or other).
9 Block key
Followed by Mifare specification every block of data has own security setting. Trailer
Sector descript which key (A or B) is needed to read and/or write block.
Key program is done by USB software. Factory security key for any block is key
FFFFFFFFFFFF. Key is 6 bytes length. User can select one of 7 key stored in EEPROM
write only memory. As default RFID Reader use FFFFFFFFFFFF key for all operation.
Every block has own selector of key and authentication type, separately for read and
write operation (ReadAuthorization and WriteAuthorization registers).
User manual RFID IND Modbus Mif
Page
20
z
22
[B03]
