User's Manual Part 1

13,56 MHz Multitag Reader Module, Version 0.9v
ACG Identification Technologies AT Page 19
5.3.2 Error Codes
Following figure shows an overview of all error messages of the reader device.
Error Code Description
‘?’ Unknown command
‘F’ General failure
‘I’ Invalid data format, this error occurs only in ASCII mode. The
reader assumes a hexadecimal value but receives bad data
‘N’ No tag in the field
‘U’ Read data does not match written data, block might be write
protected or write process fails.
‘X’ Page is already locked. Lock command fails
Figure 5-4: Error codes
5.3.3 EEPROM memory organization
Following figure lists the EEPROM register of the reader device.
Page Description
00h…04h Unique device ID; read only
05h…09h administrative data, RFU
0Ah Station ID
0Bh Protocol configuration
0Ch Baud rate
0Dh Binary watchdog timer
0Eh Operation mode
0Fh Timeout value
10h RFU
11h Start page
12h Number of pages
13h…1Fh RFU
20h…FFh User data
Figure 5-5: EEPROM memory