User's Manual

Reader’s Power-up Sequence
Configuration and Operation 5-3
Reader’s Power-up Sequence
To verify the Reader’s power-up sequence, do the following:
1. Connect the power supply to the Reader.
2. Check whether the relay on the MBD21 board immediately clicks, and the green POWER
LED is on (See Figure 5.1).
3. Check whether the Reader performs the following power-on test sequence: the red DATA LED
on the MBD21 board remains ON for 6-7 seconds. Afterwards, the following sign-on message
is displayed on the PC’s screen:
Receiver REC21 (C) Copyright Lyngsoe Industries Ltd 2002.
Notes 1. If you did not assign a System Code identification number (SC) to the Reader, the DATA LED
will flash On and Off at a rate of 1.4 Hz. To set the System Code, type:
ISC=[your SC] <Enter>
2. If a string of unrecognizable characters appears on the PC’s screen, it means that the
communication link between the Reader and the PC is not set properly. Run the Learning
Procedure, as described below, to establish the correct settings.
Learning Procedure (Optional)
This a special mode of operation, specifically designed to allow a Reader to communicate with the
PC to which it is attached, by adapting itself to the serial frame format that the PC is using.
To force the Reader into the learning mode, follow the steps below. (See Figure 5-1).
1. Press the RESET button once.
2. Verify whether the DATA LED flashes at a rate of 2 Hz. This means that the Reader is in the
learning mode, and is waiting to determine the frame format sent by the PC.
3. Send a few characters to the Reader, for example, LYNGSOE.
4. When the learning process is finished, the DATA LED will start flashing at 1.4 Hz rate and the
following message will be displayed on the PC:
Learned: rate, parity, bits
where:
rate: is the serial data rate (baud) expressed as a numeric value, for example,19200.
parity: is a single character that reports the parity bit: N for no parity, Y for parity.
bits: is a single digit (7 or 8) that reports the number of bits per character.
5. Check the Reader’s current serial communication configuration parameters by using the group
of
S parameters. You can change the settings for the PC or Reader so that the settings match
each other. If you modify the Reader’s parameters, you must save them before leaving the