Deprag AST11-1 Operating Instruction Booklet page 35

7.7.1.3.6 Data backup
The 'Save values' command can be used as often as desired in the screwdriver operation,
but however, only the last three values are saved. In case of an error or a failure, the val-
ues are always saved.
The value last saved is always available in the range fd_Step3 / fd_Torque3 / fd_Angle3.
When using the "Save values" command multiple times in the screwdriver program, the
previous values are shifted upwards (fd_Step3  fd_Step2  fd_Step1).
If an error occurs during the screwdriver operation, the screw fixing values of the incorrect
step are saved in the range fd_StepNOk / fd_TorqueNOk / fd_AngleNOk.
Example:
fd_Step3
fd_Step3  fd_Step2
fd_Step3
fd_StepNOk
fd_Step2  fd_Step1
fd_Step3  fd_Step2
fd_Step3
fd_Step2  fd_Step1
fd_Step3  fd_Step2
fd_Step3
35