25 ccr mode request, 26 input number request, 27 error code request – Pioneer V8000 User Manual
Page 74: 28 input unit request

Operating Modes
- 67
6.25 CCR Mode Request
Function
: Returns the current communication mode
Format :
?M
Explanation : The command returns the contents of the Communication
Control Register (CCR).
The CCR default value is set to Mode 3 (ON).
CM2 Mode-2
CM3 Mode-3
Execution :
String
Status Return
DVD player
?M
CM3
CCR = 3 (Default Communication Mode)
6.26 Input Number Request
Function
: returns input numbers
Format :
?N
Explanation :
The player waits the input of number from the remote controller
and returns the input number.
Execution :
String
Status Return
DVD player
?N
Waits to input the numeric numbers
7
6.27 Error Code Request
Function
: returns the latest error code
Format :
?E
Explanation :
The player returns the most recent error codes. The “error code”
means the error that the player returned for a command (Ex. E04).
6.28 Input
Unit
Request
Function
: returns a code for data input through a Remote control
Format :
#I
Explanation :
The player returns a four-digit ASCII-Hex code that represents
commands sent through the remote control.