Denon Professional DN-501C Manual Del Propietário página 45

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n Command Sending Format
Commands are issued using a Command Packet surrounded by the Start Byte and End Byte.
0x F0004003
CommandPacket
(Start Byte)
The Command Packet format is as shown below.
Total
Remain
Format
Command
Command
(0x11)
Packet
Packet
(1byte)
(1byte)
Item
Content
Format
Fixed as 0x11 in the DN-501C.
Total Command
Used to send commands that have parameters that do not fit into the Parameter
Packet
Pack. This is 1 when the parameter is less than 80 bytes.
Remain Command
Used to send commands that have parameters that do not fit into the Parameter
Packet
Pack. This is 0 when the parameter is less than 80 bytes.
Command
Consists of 2 bytes from the category code and command.
Parameter Pack
Describes the length of the Parameter Pack. The maximum length of the
Parameter Pack is 80 bytes.
Length
Parameter Pack
Parameters.
Check Sum
All of the bytes from the Format to the Parameter Pack are added, and the top 4
bits and bottom 4 bits are each converted to ASCII code and stored.
n Divided transmission of commands
If a Parameter Pack exceeds 80 bytes, the command is divided and sent.
In this case, the Total Command Packet contains the total number of commands, and the Remain
Command Packet contains the remaining number of transmissions.
n RemainCommandPacket for a command divided and sent in 3 parts
Total Command Packet
Remain Command Packet
3
1st
2nd
3
3rd
3
0xF7
(End byte)
Parameter
Parameter
Command
Check Sum
Pack Length
Pack
(2bytes)
(2bytes)
(1byte)
(0-80bytes)
Description
2
Two Command Packets remain
1
One Command Packet remains
0
No Command Packets remain
The divided Parameter Pack is reconstructed by the receiver, and is interpreted as the parameters for one
command.
1st part
Format-Model ID Total 3 Remain 2 Command Length
2nd part
Format-Model ID Total 3 Remain 1 Command Length
3rd part
Format-Model ID Total 3 Remain 0 Command
Interpretation of
received command
Command
Parameter part 1
n Precautions when dividing commands
DN-501C
Do not send any other commands in between sending parts of divided commands. In such a case,
DN-501C will discard command A.
Commands can be divided to a maximum of 10 parts. Do not divide into 11 or more parts.
Do not divide the command if the parameters are less than 80 bytes.
39
39
Serial remote control function
Sum
Parameter part 1
Sum
Parameter part 2
Length
Sum
Parameter part 3
Parameter part 2
Parameter part 3
Controller
Command A
Remain (1)
Command B
Command A
Remain (0)

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