Microscan HS-2D Manuale Utente Scaricare il pdf (Pagina 142)

A-24 HS-21/HS-41X Handheld Reader User’s Manual

Serial Commands

Simple Protocol

The file is split into blocks of 236 or less bytes each and downloaded to the reader via 1, 2,

and 5 commands using the following sequence:

1. Send a 1 command to initialize the download.

2. Wait for a d or e response from the reader or a timeout.

a. If timeout or e response, restart the sequence at step 1.

b. If d response, continue to step 3.

3. Send a series of 2 commands, each with a portion of the file. (The reader will not

send any response.)

4. Send a 5 command to end the download and install the file.

5. Wait for a d, e, or f response from the reader or a timeout.

a. If f response or timeout, restart the sequence at step 1.

b. If e response, repeat step 5.

c. If d response, file download has completed successfully.

Note: The timeout will need to be increased from the normal response timeout to allow the

firmware time to write the file to the flash memory.

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Microscan HS-2D Manuale Utente Pagina 142