Command Definition - Pioneer PDP-4270XA Service Manual

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9.1.4 COMMAND DEFINITION

Single functional command
The command to which operation is concluded only by command. The command parts are 3 characters.
Send data to
Adjustment command and adjustment value
• The command to which value of parameter is changed attended with adjustment value.
The command parts are 3 characters.
• The adjustment value is the numeric character data of the decimal number 3 characters.
It is made the range of 000-999. The range that can be adjusted is different according to the function to adjust (It is
noted that then, it is not uniformly to 999).
Send data to
STX ID
∗∗
0x02
* When the received command exceeds the range where the adjustment value can be adjusted, "XXX" is transmitted.
* When the same adjustment value is continuously transmitted two times or more, "XXX" doesn't reply, though it is an
invalid command. It's overwrited, and ACK that deletes ID replies.
Set command and Set value
• The command to which set value of parameter is changed attended with set value.
The command parts are 3 characters.
• Set values are three characters. The first character is fixed to "S".
2 remainder characters are assumed to be assumption S00-S99 as the decimal number.
Send data to
STX ID
∗∗
0x02
* When the received command doesn't exist as a set value, "XXX" is transmitted.
* When the same set value is continuously transmitted two times or more, "XXX" doesn't reply, though it is an invalid
command. It's overwrited, and ACK that deletes ID replies.
State acquisition command
• The command that reports on state of operation and set value, etc. to system side.
• The content that corresponds by the kind of the command is read from the memory, when the command is received
from the system side and it replies.
• The command parts are three characters. The first character is fixed to "Q". It sets since the second character according
to the content of information.
• The reply data is transmitted adding various data that converts the received command and ASCII code and the checksum
of the data. Because the content of the reply changes according to the kind of the "QUEST command", the data length
follows an individual, individual specification.
Send data to
STX
0x02
5
6
PC
STX ID Command
∗∗
0x02 PON 0x03
PC
Command Parameter ETX
CNT 128 0x03
PDP system
Command Parameter ETX
MKS S02 0x03
PDP system
ID Command ETX
∗∗
QS1 0x03
6
7
Receive data
ETX STX
0x02
Receive data
STX Command
0x02
Receive data
STX Command
0x02
Receive data
STX Command
0x02 QS1
PDP-427XD
7
8
Command ETX
PON 0x03
Parameter ETX
CNT 128 0x03
Parameter ETX
MKS S02 0x03
Parameter ETX
• • • • • • • • • 0x03
8
A
B
C
D
E
F
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