TransCore SmartPass AI1611, Системное руководство

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SmartPass® Integrated Reader 2450 MHz (High Voltage) System Guide
The default serial port configuration is as follows:
•
9600 baud, 8 data bits, 1 stop bit, no parity
•
Basic communications protocol
•
Software flow control (XON/XOFF)
You can change these parameters for data mode and command mode operation by
issuing commands with the host. Refer to Chapter 9, “Commands”. While operating
in download mode, the SmartPass reader always uses the default configuration
parameters.
Error Messages
SmartPass supports several error messages.
Error is the standard error message to host commands. It is transmitted if a command
received from the host is illegal or if information supplied with the command is
illegal. Also, the reader sends this message to diagnostic commands if the reader
fails the specified test.
The error messages shown in Table 6-1 are transmitted based on the content level of
the tag buffer. These messages are transmitted in data mode and command mode.
They will not be transmitted if uniqueness checking has been disabled to transmit all
IDs (command 40) or buffer all IDs (command 43).
Table 6-1 Error Codes
Error Message Buffer Status
Error02 Tag buffer is full. Incoming IDs cannot be
buffered. An overflow of the tag buffer can occur
if SmartPass is left in command mode or if flow
control has disabled transmission. A buffer
overflow results in subsequent tag IDs being
lost.
Error03 Tag buffer has been partially cleared and new
IDs are once again being stored.
Error04 Tag buffer has filled to 75%.
Error05 Tag buffer has emptied to 50%.
If the buffer fills up and then transmission is re-enabled, the sequence of transmitted
reports would be as follows:
•
Error 04 filled to 75% full
•
Error 02 100% full
•
Error 03 emptied to less than 100%
•
Error 05 emptied to 50%
6-4