Printronix P3000 Series manual OCR-A and OCR-B, Downloading Languages

mode and pitch at which the Extended Character Set is printed. The print mode and pitch can be differ- ent for the Primary and Extended Character Sets. However, the Primary Set cannot be mixed with an Extended Set within the same line if the Extended Set is printing at a different print mode than the Primary Set.

When ECMA–94 Latin 1 character set is selected from the control panel, the host can send the OSET command to select the extended portion of the character set. More information on the OSET command is provided in Character Set Select: ECMA–94 Latin 1 Extended, located in the Programming chapter.

OCR–A and OCR–B

OCR print modes are selected from the Print Mode feature at the Print Format (Level I) of the Configu- ration Diagram (Configuration chapter).

OCR print modes do not contain complete character sets. Available OCR–A standard characters are dictated by American National Standard Institute (ANSI) #X3.17–1981, and OCR–A international characters are in accordance with International Organization for Standardization (ISO) #646–1973. Available OCR–B standard and extended characters are dictated by ANSI #X3.49–1975. Undefined OCR characters are replaced with spaces. When an international language substitution is selected for a non–existent character, no substitution will occur.

Downloading Languages

Downloading a Language (ESC V) allows you to define and download a character substitution table for the 224 printable symbol code points. Refer to page 6–31 in the Programming chapter. You can invoke a custom language set with ESC RX. Refer to page 6–19 in the Programming chapter.

Character Set Charts and International Language Substitution Tables

The character set charts in Appendix B provide the hexadecimal character address for each character set and international language. For example, if the IBM PC Character Set and U.S. ASCII Language is selected, 0023 hex selects the Number Sign (#). If IBM PC–English language is selected, hex 0023 on the IBM–PC International Language Substitution Table will substitute the English Pound symbol for the Number Sign.

The International Language Substitution tables identify only specific character substitutions available in the selected language. Hex addresses not shown on the substitution tables use the character in the hex address shown on the standard character set chart.

The complete Character Address Table (Character Library) is shown on page 9–4. The Character Li- brary identifies each character’s location in printer memory by its Printronix standard hexadecimal address value (see the Numeric Character Listing starting on page 9–6or the Alphabetical Character Listing starting on page 9–14). Use the Character Address Table when you are defining a download language. If you want to print a Lowercase Beta at hex 41 instead of the Uppercase A, you would find the Lowercase Beta at location hex E1 in printer memory.

NOTE: The character examples provided in Appendix B are representative examples and not exact replications generated by the printer. Most symbols are shown in 10 cpi. Not all characters are available in all print modes.

9–2 Multinational Character Sets