Metrohm 756 KF Coulometer - Manual (Page 104)

4.2 Remote control commands
756/831 KF Coulometer, Instructions for Use 96
.HeatTime: Heating time for the dots in ms. Input in steps of 0.5 ms. Longer heating
times give darker printouts.
.MotorSpeed in ms per step (6 steps = 1 dot). Small numbers give high printing
speed.
If you wish to speed up the internal printer, set low heating times as a first measure,
then low motor speed.