- 14 -

www.hzgrow.com

0xEF01

Xxxx

01H

03H

0aH

000eH

Acknowledge package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Module

address

Package

identifier

Package

length

Confirmation

code

Checksum

0xEF01

Xxxx

07H

03H

xxH

sum

Note 1： Confirmation code=00H: ready to transfer the following data packet;

Confirmation code=01H: error when receiving package;

Confirmation code=0fH: fail to transfer the following data packet;

2 ： Module shall transfer the following data packet after responding to the upper

computer.

Download the image

DownImage

Description: to download image from upper computer to Img_Buffer. Refer to 1.1.1 for more about

the image buffer.

Input Parameter: none

Return Parameter: Confirmation code (1 byte)

Instuction code: 0bH

Command (or instruction) package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Module address

Package

identifier

Package

length

Instruction

code

Checksum

0xEF01

Xxxx

01H

03H

0bH

000fH

Acknowledge package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

Header

Module

address

Package

identifier

Package

length

Confirmation

code

Checksum

0xEF01

Xxxx

07H

03H

xxH

sum

Note: 1：Confirmation code=00H: ready to transfer the following data packet;

Confirmation code=01H: error when receiving package;

Confirmation code=0eH: fail to transfer the following data packet;

2：Module shall transfer the following data packet after responding to the upper computer.

Data package length must be 64, 128, or 256。

To generate character file from image

Img2Tz

Description: to generate character file from the original finger image in ImageBuffer and

store the file in CharBuffer1 or CharBuffer2.

Input Parameter: BufferID (character file buffer number)

Return Parameter: Confirmation code (1 byte)

Instuction code: 02H

Command (or instruction) package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

1 byte

2 bytes

Header

Module

address

Package

identifier

Package

length

Instruction

code

Buffer

number

Checksum