VEDA HCT User Manual Set Up Constants A data is written to the designated register. The data (Setting Value) can be a “Constant” or a “Variable”. In the figure above, a constant “0” is written to the register LW0 of HMI. Set Up Character Strings This function is similar to “Set Up Constants”. A character string can be written to the word register. For example, character string “A123” is written to the register LW0 and LW1 of HMI. 103