Pioneer V8000 - Manual (Page 61)

Operating Modes
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Format : ?B
Explanation : The player returns the value of the current Block number as a 7-
digit integer. Correct values show only when the player is in Random Access
mode.
If a Block number is unavailable, the player retains the previous value.
Execution :
String Status Return DVD player
?B
0115310 Play mode
11 min, 53 sec, 10 Blocks
6.6 Frame Number Request (DVD)
Function : Returns the current Frame number
Format : ?F
Explanation : The player returns the contents of the Current Frame Register.
The player may experience a conflict between the command receiving/
handling and the Frame number updating. Thus, continuous Frame numbers
may be unavailable when the system is in Playback mode.
If the command is sent to a disc without Frame numbers, the player returns
error message E04.
Accurate, current values are available when the player is in Random Access
mode.
If a disc Frame number is unavailable, the player retains the previous value.
Execution :
String Status Return DVD player
?F 0002047 Play mode
Frame 2047
6.7 Index Number Request (CD)
Function : Returns the current Index number
Format : ?I
Explanation : The player returns the current Index number as a 4-digit integer.
Correct values show only when the player is in Random Access Mode.