TransCore SmartPass AI1611, System Manual

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SmartPass® Integrated Reader 2450 MHz (High Voltage) System Guide
Command Information
The following sections provide information about each command. Refer to Table 9-
3 for a listing of commands ordered by name.
Note: In the following text the symbols “<“ and “>“ are used to represent
required variable message data. These symbols are not part of the message
syntax.
00 Switch to Data Mode (Factory Default)
Command 00 switches the reader to data mode, which allows the reader to transmit
tag data (ID codes) to the host. The reader enters data mode on power up.
While operating in data mode, the reader accepts the following commands:
•
Switch to command mode (01)
•
Switch to download mode (05)
•
Invoke check tag (8110)
Reader message:
Done
01 Switch to Command Mode
Command 01 switches the reader to command mode, which allows the reader to
accept commands from a host or terminal. While in command mode, the reader does
not transmit tag IDs to the host as they are acquired. The IDs are stored in the
reader’s tag buffer for transmission when requested by the host.
While operating in command mode, the reader continuously monitors the level of its
tag buffer. If the buffer becomes 75% full, the reader transmits an
Error 04
message
to the host. If the buffer becomes 100% full, it transmits an
Error 02
message. Once
the buffer is full, incoming tag IDs cannot be buffered, and they are lost. The reader
will not resume asynchronous tag transmission until it is returned to data mode
(command 00). Upon return to data mode, the reader begins to empty the tag buffer.
Once the buffer is no longer full, the reader will transmit the
Error 03
message
indicating that the tag buffer has been partially cleared, and new IDs are again being
stored. When the buffer has emptied to 50% the reader will transmit the
Error 05
message.
Reader message:
Done
05 Switch to Download Mode
Command 05 switches the reader to download mode, which allows an external host
computer to download new software into the reader flash memory.
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