Rs232C Control - Denon DN-F650R Owner's Manual

RS232C control

RS232C control
You will be able to perform the three control functions from the
host by connecting an RS-232C straight cable to the RS-232C serial
terminal (9-pin D-sub) connector.
GThree control functionsH
q Controlling and operating DN-F650R from the host (vpage 28)
w Sending the status information to the host when DN-F650R
receives a status request command from the host (vpage 29)
e
Automatically sending the status information to the host
when there is a change to the DN-F650R status(vpage 29)
n Connections
• Compatible Connector: 9-pin D-sub (male)
• Communication speed: 38,400 Bps
• Data Bit: 8 Bit
• Parity: None
• Stop Bit: 1 Bit
• Flow Control: None
Pin Arrangement
Pin Number Signal Name
1 Ground
6 NC
2 TxD
7 NC
3 RxD
8 NC
4 NC
9 NC
5 S. Ground
28
n Structure of Control Commands
Each packet of a control command begins with the Start Character
'@'and ends with the End Character "0x0D" as shown below.
Start
COMMAND
ID
Character
@ 0
n Structure of Command Codes
Value (the hex value is indicated in
Item
parentheses)）
Start character '@' (0 x 40)
ID '0' (0 x 30)
Command Indicate a description of the command.
End character 'CR'(0 x 0D)
The response timeout is 100msec.
n Command Codes for ACK (Acknowledgement)
and NACK (No acknowledgement)
Hex Conditions for sending command
Description
value
ACK 0 x 06
NACK 0 x 15 • When an End Character (0x0D) is
received without a Start Character '@'
• When an invalid command is received
• When the signal transmission is
stopped for 5msec or more between
the characters of a command.
• When a command is received, DN-F650R responds either with an
ACK or NACK command within 100 msec.
• If DN-F650R does not respond with either command even after 100
msec have elapsed, the next command is accepted.
q Controlling and operating DN-F650R from the host
When DN-F650R receives a control command from the host, the
unit sends an ACK (acknowledgement) command and executes the
command.
DN-F650R
End
Character
CR (0x0D)
ACK
Handshake flow charts for control command
When DN-F650R receives data other than the specified commands or
an End Character (0x0D) without a Start Character ('@'), a reception
error occurs and the unit sends a NACK command.
For "Control command code table" (vpage 30).
codes
---
Host
Control command