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SRP-X500P RS-232C Interface Manual
2. Command Reference
2.1 Basic Control Commands
The following commands are provided to perform basic control on the SRP-X500P such as volume level control
and channel input selection.
2.1.1 AV/RGB INPUT SELECT : 0x43 0x53 0x45 0x4C (‘CSEL’)
This command is used to select the channel input from the AV/RGB INPUT connectors (A to E).
Packet format
0x43 0x53 0x45 0x4C “parameter” 0x0D
♦ Parameter
The parameter consists of 1 byte of data, as shown in the following table.
Byte Parameter
1st AV/RGB INPUT SELECT
• AV/RGB INPUT SELECT (1st byte)
Specifies the channel as the parameter. The parameter and the channel are shown in the
following table.
Channel
OFF (All buttons turn off.) 0x30 (‘0’)
A (Only button A turns on.) 0x31 (‘1’)
B (Only button B turns on.) 0x32 (‘2’)
C (Only button C turns on.) 0x33 (‘3’)
D (Only button D turns on.) 0x34 (‘4’)
E (Only button E turns on.) 0x35 (‘5’)
Example
To select channel B from among the AV/RGB INPUT connectors
0x43 0x53 0x45 0x4C 0x32 0x0D
(‘C S E L 2 CR’)
2.1.2 AV/RGB INPUT SELECT PARAMETER REQUEST : 0x52 0x53 0x45
0x4C (‘RSEL’)
This command is used to read the selection of the channel input from the AV/RGB INPUT connectors from the
SRP-X500P.
Packet format
0x52 0x53 0x45 0x4C 0x0D
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