DVP-ES3 Series Programming Manual Step 3: set up the initial values and write the programs. _6 6-224 Device D D512 D514 D516 Observational error when leaving (32-bit) K50 K-20 K20 Device D D2000 D2001 D2002 Value of the head index (16-bit) K0 K0 K0 Device D D2003 D2004 D2005 Value of the tail index (16-bit) K0 K0 K0