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Getting started
Part names
and functions
Connections Control functionSetting Defaults
File and folder
settings
Playback Information
Serial remote control function
n Command Sending Format
Commands are issued using a Command Packet surrounded by the Start Byte and End Byte.
0x F0004003
(Start Byte)
CommandPacket
0xF7
(End byte)
The Command Packet format is as shown below.
Format
(0x11)
Total
Command
Packet
(1byte)
Remain
Command
Packet
(1byte)
Command
(2bytes)
Parameter
Pack Length
(1byte)
Parameter
Pack
(0-80bytes)
Check Sum
(2bytes)
Item Content
Format Fixed as 0x11 in the DN-700C.
Total Command
Packet
Used to send commands that have parameters that do not fit into the Parameter
Pack. This is 1 when the parameter is less than 80 bytes.
Remain Command
Packet
Used to send commands that have parameters that do not fit into the Parameter
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
Length
Describes the length of the Parameter Pack. The maximum length of the
Parameter Pack is 80 bytes.
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 Description
1st 3 2 Two Command Packets remain
2nd 3 1 One Command Packet remains
3rd 3 0 No Command Packets remain
The divided Parameter Pack is reconstructed by the receiver, and is interpreted as the parameters for one
command.
Format-Model ID Total 3 Remain 2 Command Length Sum
Format-Model ID Total 3 Remain 1 Command Length Sum
Format-Model ID Total 3 Remain 0 Command
Command
Length Sum
1st part
2nd part
3rd part
Interpretation of
received command
Parameter part 1 Parameter part 2
Parameter part 3
Parameter part 1
Parameter part 2
Parameter part 3
n Precautions when dividing commands
DN-700C
Command A
Remain (1)
Command A
Remain ()
Command
Do not send any other commands in between sending parts of divided commands. In such a case,
DN-700C 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.
Controller
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