The T-ONLINE command resets the cartridge tape drive, checks that the tape cartridge has been inserted, and rewinds the tape.
Since T-ONLINE can attach the tape drive, the T-ATT command need not be used to attach the tape separately. However, standard practice is to use T-ATT first. A program can test that T-ATT fails and take alternative action. If it fails to attach using T-ONLINE, the user is prompted to continue or quit.
Before using T-ONLINE, insert a tape cartridge into the tape drive and wait a few seconds for the drive to become ready.
Select the tape unit.
T-ONLINE checks for attachment, resets the tape drive, checks that a tape has been inserted, and rewinds the tape.
See Also