An instance of this function block type models the operation of a conveyor for a single workpiece.

A workpiece specified by the STYLE and WKPC inputs may be loaded at any position LPOS (0-100%) on the conveyor by an event at the LOAD input, and unloaded by an event at the UNLD input. Normal operation of the conveyor is defined in the CLK algorithm.

Instances of this type are used as components of the composite CNV_MDLL and CNVG_MDLL types.

The operation of an instance of this type is modeled by the Execution Control Chart (ECC) shown above and the algorithms listed below. In the FBDK, this is implemented in optimized Java™ code.

ALGORITHM LOAD IN Java :
  POS.value = Math.min(100,LPOS.value);
  END.value = (POS.value==100)&&(STYLE.value != VSTYLE.NONE);
  STYLO.value = STYLE.value;
  WKPO.value = WKPC.value;
  EMPTY.value = (STYLE.value == VSTYLE.NONE);
END_ALGORITHM
ALGORITHM UNLD IN Java :
  STYLO.value=VSTYLE.NONE;
  END.value = false;
  EMPTY.value = true;
END_ALGORITHM
ALGORITHM CLK IN Java :
  POS.value += VF.value;
  if(POS.value>=100){
  POS.value=100;
  END.value=true;}
END_ALGORITHM