--------------------------------------------------------------------------------7/28--------------------------------------------------------------------------------
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 #10 <CR>
antenna failure
XXXXXXXX <CR>
no read
ACK
no error/acknowledge
