Pioneer Industrial DVD Player DVD-V7400 - Manual (Page 64)

Current Address Request Descriptions
If a disc lacks Time information, the player returns error message E04.
If a disc Time Code fails to be read correctly, the player retains the previous
Time Code.
Execution :
String Status Return DVD player
Play mode (VCD)
?T 03213 32 minutes, 13 seconds
?T 11742 117 minutes, 42 seconds
6.5 Index Number Request (CD, VCD)
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 or is
reading the lead-in/lead-out area of the disc.
Execution :
String Status Return DVD player
?I 0102 Play mode
Track 1, Index 2
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 or is reading the lead-in/lead-out area of the disc.
- 57