ZFM-70 SeriesFingerprint Identification Module
User Manual
www.zhiantec.com
Hangzhou Zhian Technologies Co.,Ltd
27
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
0xEF01
xxxx
01H
0003H
1dH
0021H
Acknowledge package format:
Header
Module
address
Package
identifier
Package
length
Confirmation code
Template number
Checksum
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
2 bytes
0xEF01
xxxx
07H
0005h
xxH
N
sum
Note: Confirmation code=00H: read complete;
Confirmation code=01H: error when receiving package;
6.3
Fingerprint-processing instructions
6.3.1
To capture finger image
Description: detecting finger and store the detected finger image in ImageBuffer while returning
successful confirmation code; If there is no finger, returned confirmation code would be
“can’t detect finger”.
Input Parameter: none
Return Parameter: Confirmation code (1 byte)
Instruction code: 01H
Command (or instruction) package format:
Header
Module address
Package
identifier
Package length
Instruction code
Checksum
2 bytes
4bytes
1 byte
2 bytes
1 byte
2 bytes
0xEF01
Xxxx
01H
0003H
01H
05H
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: finger collection success;
Confirmation code=01H: error when receiving package;
Confirmation code=02H: can’t detect finger;
Confirmation code=03H: fail to collect finger;
6.3.2
Open backlight
Description: open backlight for capture fingerprint
Input Parameter: none
Return Parameter: Confirmation code (1 byte)
Instruction code:50H