Cino FA470 - Manual (Page 234)

Command Descriptions
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2.9 Device Info
Get Device Info
(ALL)
Descriptions
Request the desired device information as well as DataWizard Premium information parameters
Packet Format
Prefix Opcode Status Length Parameter(s) LRC Suffix
7Eh D6h 00h 01h 00h Variable See Below Variable 7Eh
1 Byte 3 Bytes 1 Byte 2 Bytes Variable 1 Byte 1 Byte
Parameter(s)
First Parameter ……… Last Parameter
PID Size ……… PID Size
2 Bytes 2 Bytes ……… 2 Bytes 2 Bytes
See Next Page
. Host Requirements
If the device successfully received the above command issued by the host, the device will pack all
requested parameters into a “Reply Device Info” message string then send to the host. Please refer to
the “Reply Device Info” command for details. Otherwise, a “Device NAK” will be sent to host to indicate
issue a command error. However, if the host can receive any response from the device within the user
preset time-out duration, please resend the above command.
. Parameter(s) Field
Get Device Status can request multiple parameters at one time, so it takes compound parameters.
. Length
Total size (bytes) of the Parameter(s) field
. LRC
”Opcode” XOR “Status” XOR “Length” XOR “Parameter(s)”
. Size
Total size (bytes) of the Options field