RFID 2022 - 3.5.1 Initiate Self Test; 3.5.2 Assign Readers

21
to backspace and fix it, simply start it over with a new BOM delimiter.
INITIATE SELF TEST – [I]
Type this: [I]
The Interface performs a comprehensive self test, indicates its Mode 3 status, and
displays its firmware version. The internal tests performed are of the ACIA -
communication circuitry, RAM - internal memory, ROM - program memory, and the
processor's internal timer. The results of each test are transmitted as they are
completed with a "1" indicating the successful completion of a test and a "0" indicating
failure. If any of these tests fail, contact RFID for corrective action.
Successful self test will read as follows:
"111111111(Vn.nn)" for Modes 1 & 2 and "101111111 (Vn.nn)" for Mode 3,
followed by the System Reset, "ELECTRONIC LABEL".
The first nine characters represent in order:
ACIA test
Duplicate Tag test (0 = Mode 3, 1 = Mode 1 or 2)
Not used
RAM test
ROM test
Timer test
Not used
Not used
Firmware release version followed by M(Vn.nn) where n.nn is the release number. A
SYSTEM RESET follows this transmission.
Following the transmission of the Self Test message, the processor goes idle to allow the system
"WATCHDOG" to generate a hardware reset. This reset should generate a power up message.
Failure to receive the power up message should be regarded as a problem that should be corrected
before the Interface can be reliably used.
The WATCHDOG is a circuit that must be continually pulsed by the microprocessor's firmware. If the
microprocessor gets hung up due to a power surge or processor failure it will automatically reset itself.
The idle mode at the end of the Self Test tests this feature.
ASSIGN READERS – [A####]
Type this: [A####] where # equals the hex addresses explained below.
The Assign command can be used to instruct the Interface to eliminate Readers from its
polling loop. The format of the command is a capital A followed by 4 hexadecimal
digits 0 - F. If used, hex digits A - F must be capital letters. The 4 digits represent a
binary bit map of the Readers to be polled with a binary "1" signifying that the
corresponding Reader is to be polled, and a "0" signifying that the corresponding