Cino FA470 - Manual (Page 242)

Command Descriptions
2-227
Host ACK
(ALL)
Descriptions
Host acknowledgement in packet format.
Host ACK message is sent from host to device to guarantee the correctness of the decode data.
Packet Format
Prefix Opcode Status Length Parameter(s) LRC Suffix
7Eh 91h 10h 00h 00h 00h 04h See below Variable 7Eh
1 Byte 3 Bytes 1 Byte 2 Bytes 4 Bytes 1 Byte 1 Byte
. Host Requirements
There is no response for this message.
. Length
Total size (bytes) of the Parameter(s) field
. LRC
”Opcode” XOR “Status” XOR “Length” XOR “Parameter(s)”
Parameter(s)
< Table 10-1 > Host ACK Parameter(s) Field
Parameter / PID / Size Options Descriptions
Host ACK
PID : <Null>
Size : 00h 04h (4 Bytes)
-XXh XXh…XXh
Indicates the Data Packet ID (See Decode
Data in Chapter 2.2) to which the Host ACK is
replied