Appendix A

LQ-1500 Command Summary

This appendix gives a brief summary of the LQ-1500commands (control codes). While this is a complete list of the commands, the descriptions are not complete in all cases. The complete descriptions of all the commands, including examples of their use, can be found in the LQ-1500 Programmer’s Manual.

In some cases the explanations given here describe the apparent function of the commands, rather than the actual mechanical movements of the printer. For example, since the printer prints in both directions, the line feed command may not actually return the print head to the left margin if the next line prints from right to left, but the final effect on the printed page is the same as if it had.

The commands are organized into five logical groups: Vertical Spacing Commands, Horizontal Spacing Commands, Character Set Commands, Graphics Set Commands, and Miscellaneous Com- mands. The function is what the printer will do when given the proper command. The format is the correct syntax for the ASCII code that the printer undertands. This code may expressed as a symbol, a decimal value, or a hexadecimal value depending on the program you are using. Where n (or another italic letter) is used as a variable, it stands for a numerical value.

49