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2 bytes

4bytes

1 byte

2 bytes

1 byte

16 bytes

2 bytes

Header

Module

address

Package

identifier

Package

length

Confirmation

code

Basic parameter

list

Checksum

0xEF01

xxxx

07H

3+16

xxH

See following

table

sum

Note: Confirmation code=00H: read complete;

Confirmation code=01H: error when receiving package;

Name

Description

Offset (word)

Size (word)

Status register

Contents of system status register

0

1

System identifier code Fixed value: 0x0009

1

1

Finger library size

Finger library size

2

1

Security level

Security level (1, 2, 3, 4, 5)

3

1

Device address

32-bit device address

4

2

Data packet size

Size code (0, 1, 2, 3)

6

1

Baud settings

N (baud = 9600*N bps)

7

1

Read valid template number

TempleteNum

Description: read the current valid template number of the Module

Input Parameter: none

Return Parameter: Confirmation code (1 byte)，template number:N

Instuction code: 1dH

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

0003H

1dH

0021H

Acknowledge package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

2 bytes

2 bytes

Header

Module

address

Package

identifier

Package

length

Confirmation

code

Template

number

Checksum

0xEF01

xxxx

07H

5

xxH

N

sum

Note: Confirmation code=00H: read complete;

Confirmation code=01H: error when receiving package;

Fingerprint verification

GR_Auto Search

Description: Match captured fingerprint with fingerprint library ,then return the result. Self-define

time for capture , Search start position code and search quantity.

Input parameter: capture time, start bit number, search quantity

Return parameter: Confirmation code; page; Match score

Instruction code: 32H

Command (or instruction) package format:

2 bytes

4 bytes

1 bytes

2 bytes

1 bytes

1 bytes

2 bytes

2 bytes

2 bytes

Header

Original Package Package Instructi Time

start bit search

Checksu