ZFM-70 SeriesFingerprint Identification Module
User Manual
www.zhiantec.com
Hangzhou Zhian Technologies Co.,Ltd
23
VI Module Instruction System
ZFM-70 series provide many 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
6.2
System-related instructions
6.2.1
Verify passwoard
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:
Header
Module address
Package
identifier
Package Length
Instruction code
Password
Checksum
2 bytes
4bytes
1 byte
2 bytes
1 byte
4 byte
2 bytes
0xEF01
xxxx
01H
0007H
13H
PassWord
sum
Acknowledge package format:
Header
Module address
Package identifier
Package Length
Confirmation
code
Checksum
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
0xEF01
xxxx
07H
0003H
xxH
sum
Note: Confirmation code = 00H: Correct password;
Confirmation code = 01H: error when receiving package;
Confirmation code = 13H: Wrong password;
6.2.2
Set password
Description: Set Module’s handshaking password. (Refer to 4.6 for details)
Input Parameter: PassWord (4 bytes)
Return Parameter: Confirmation code (1 byte)
Instruction code: 12H
Command (or instruction) package format:
Header
Module address
Package
identifier
Package length
Instruction code
Password
Checksum
2 bytes
4bytes
1 byte
2 bytes
1 byte
4 byte
2 bytes
0xEF01
xxxx
01H
0007H
12H
PassWord
sum
Acknowledge package format: