Read Harman Kardon SIGNATURE 2.0 (serv.man11) User Guide / Operation Manual online
SIGNATURE
B
US
P
ROTOCOL
M
ASTER
D
OCUMENT
Revised 2-24-98
Page 8 of 20
A
CKNOWLEDGMENT
C
OMMAND
:
A
CKNOWLEDGE
:
Source
Device Type
Target
Device Type
Target
Unit ID
Source
Unit ID
Command
Modifier
Data
Length
Preamble
Byte
Command
Byte
Data
Byte(s)
Checksum
Byte
30h
20h
01h
01h
01h
Computed
7Eh
Command
Data
See page 7
Source
Device Type
Target
Device Type
Target
Unit ID
Source
Unit ID
Command
Modifier
Data
Length
Preamble
Byte
Command
Byte
Data
Byte(s)
Checksum
Byte
20h
30h
01h
01h
02h
02h
7Eh
See Below
None
See page 7
The acknowledge Command Byte is formed by adding 80h to the received Command Byte.
Example:
HEX
HEX
COMMAND DESCRIPTION
05
Command to Mute
85
Acknowledge
The receiving unit transmits the “Acknowledge” response to let the sending unit know that
the message has been successfully received.
the message has been successfully received.
The Data Byte(s) are not included in the Acknowledge message.
An Acknowledge is required after EVERY message sent, in either direction.
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