SFG R303A Series, Руководство пользователя, Страница: 13 / 24

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-processing instructions
To collect finger image GenImg
Description: detecting finger and store the detected finger image in ImageBuffer while
returning successfull 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)
Instuction code: 01H
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 01H 05H
Acknowledge package format:
2 bytes 4bytes 1 byte 2 bytes 1 byte 2 bytes
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