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1Ah: invalid register number;

1Bh: incorrect configuration of register;

1Ch: wrong notepad page number;

1Dh: fail to operate the communication port;

others: system reserved;

41h: No finger on sensor when add fingerprint on second time.

42h: fail to enroll the finger for second fingerprint add.

43h: fail to generate character file due to lackness of character point or over-smallness of

fingerprint image for second fingerprint add

44h: fail to generate character file due to the over-disorderly fingerprint image for second

fingerprint add;

45h: Duplicate fingerprint

V Module Instruction System

R30X series provide 23 instructions. Through combination of different instructions, application

program may realize muti finger authentication functions. All commands/data are transferred in

package format. Refer to 5.1 for the detailed information of package.

System-related instructions

Verify passwoard VfyPwd

Description: Verify Module’s handshaking password. (Refer to 4.6 for details)

Input Parameter: PassWord (4 bytes)

Return Parameter: Confirmation code (1 byte)

Instruction code: 13H

Command (or instruction) package format:

2 bytes

4bytes

1 byte

2 bytes

1 byte

4 byte

2 bytes

Header

Module

address

Package

identifier

Instruction

code

Password

Checksum

0xEF01

xxxx

01H

07H

13H

PassWord

sum

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: Confirmation code = 00H: Correct password;

Confirmation code = 01H: error when receiving package;

Confirmation code = 13H: Wrong password;

Set password

SetPwd

Description: Set Module’s handshaking password. (Refer to 4.6 for details)

Input Parameter: PassWord (4 bytes)