Cino FA470 - Manual (Page 31)

Command Descriptions
2-16
Reply Format
Part 1 – First Image Data Command
Prefix Opcode Status Length Parameter CRC16 Suffix
7Eh 0Fh 1Ah 02h 34h 10h 00h See Below Variable 7Eh
1 Byte 3 Bytes 1 Byte 2 Bytes 4096 Bytes 2 Bytes 1 Byte
Parameter
Image Width Image Height Image Size Image Data
4 Bytes
(Big Endian)
4 Bytes
(Big Endian)
4 Bytes
(Big Endian)
4084 Bytes
Part 2 – Subsequent Image Data Commands
Prefix Opcode Status Length Parameter CRC16 Suffix
7Eh 0Fh 1Ah 02h 34h 10h 00h <Image Data> Variable 7Eh
1 Byte 3 Bytes 1 Byte 2 Bytes 4096 Bytes 2 Bytes 1 Byte
Part 3 – Last Image Data Command
Prefix Opcode Status Length Parameter CRC16 Suffix
7Eh 0Fh 1Ah 02h 14h See Note <Image Data> Variable 7Eh
1 Byte 3 Bytes 1 Byte 2 Bytes Maximum 4096 Bytes 2 Bytes 1 Byte
. Notes
1. Status is defined as follows:
Value Bit 2 ACK/NAK Bit 4 Check Digit Bit 5 Continuation Other Bits
0 Do not request LRC (1 Byte) Last packet
1 Request CRC16 (2 Bytes) Intermediate packet
Reserved
Always 0
2. Length of the Last Image Data Command equals to the length of the remaining Image Data
which should be no more than 4096 bytes.
3. CRC16 Check Digit is calculated from the beginning of the Opcode field to the end of the
Parameter field.