User manual

V002450_25_CR1200-CR2-CR3-CR2500-CR3500_Interface_Configuration_Document_CLIENT.docx
2011-04-27 Page 8 of 65
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a
Indicates that data contains the first part of a decode. A sequence of a packets always
ends with a z packet. The data of all a packets in a group and the final z packet are
concatenated by the Host. (Also see the Host-to-Reader ‘R’ command description.)
d
Indicates that a command and its associated data were successfully received; data
optionally contains a null-terminated text message.
e
Indicates that a command was not successfully received, i.e., it had a bad type, size, or
checksum, and should be re-sent; data optionally contains a null-terminated text
message.
g
Indicates that a group of z and/or p packets follows, terminated by a d or e packet (d for
complete group, e for incomplete group)
h
Indicates that data contains a zero-terminated Bluetooth
®
connection string (of printable
ASCII characters): IIII BBBBBBBBBBBB L
where:
IIII is the storage index
BBBBBBBBBBBB is the Bluetooth
®
Device Address (twelve hexadecimal
digits)
L is “y” if link key stored, “n” if no link key stored