OBID
®
classic-pro
Manual
ID CPR30.xx
FEIG ELECTRONIC GmbH
Page 85 of 126
H01114-0e-ID-B.docx
MODE:
Options for frame format request.
The following frame types are defined:
- short frames for commands like REQA, WUPA, ...
- standard frames for regular commands;
- bit oriented anticollision frame for anticollision command
- bit oriented frame with variable bitrates
0 = short frame
A short frame is used to initiate communication and consists of, in the following or-
der:
- start of communication.
- 7 data bits transmitted LSB first
- end of communication.
- No parity bit is added.
1 = standard frame
Standard frames are used for data exchange and consist of:
- start of communication.
- n * (8 data bits + odd parity bit), with n _ 1. The LSB of each byte is transmitted
first. Each byte is followed by an odd parity bit. The parity bit P is set such that the
number of 1s is odd in (b1 to b8, P).
- end of communication.
2 = bit oriented frame
Bit oriented Frames are used for anticollision.
3 = bit oriented frame with variable bitrates
Bit oriented frames with variable Tx- and Rx-Bitrates
RSP-LENGTH
If RSP-LENGTH is set to “0” the Reader will send the command but not wait for any re-
sponse. If RSP-LENGTH is not equal to “0” the Reader will send the command and return
the response data of the Transponder without SOF and EOF.