User's Manual

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After entering an invalid parameter value, the system answers with the corresponding error code. Error
message:
Command: MD <SP> 4 <CR>
Output: NAK <SP> #02 <CR>
3.1.2.3 Output at parameter query
Parameter settings can be queried by sending the command without adding a parameter value. Exam-
ple:
Command: MD <CR>
Output: 2 <CR>
3.1.3 Blank instuction
If a single <CR> is input, the reader answers with a single <CR>. Example:
Command: <CR>
Output: <CR>
3.1.4 Incorrect instruction / error codes
If a command is not entered correctly, the reader sends one of the following error codes:
ERROR CODE MEANING
NAK #00 <CR> unknown command
NAK #02 <CR> wrong parameter
NAK #03 <CR> EEPROM error
NAK #04 <CR> wrong transponder type
NAK #05 <CR> buffer overflow
NAK #06 <CR> not logged in