NEC SuperScript 150C User Manual

NEC SuperScript 150C User Manual Manual pdf 69 page image

Command Code SummaryThis appendix contains a summary of the command codessets handled by the resident emulation.IntroductionA printer command consists typically of one or morecharacters imbedded in the flow of data transmitted to theprinter. To make the printer understand which charactersare to be interpreted as commands and which as printablecharacters, there is a simple built-in convention: all“characters” that have, according to the character table, adecimal value less than 32 are interpreted as control codes.Some of them result in an action, when they are received,others do not. The ones causing printer action can be foundin the command code description. There is also a specialcommand ESCAPE (decimal code 27, named ESC) which isused by most printer emulations to open a commandsequence. It is followed by one or more additionalcharacters, which are identifiers and parameters, belongingto the printable characters or to those from the range ofcontrol codes.If your printer receives commands which are not compatiblewith the emulation in use, it will ignore them, print them asnormal characters or even block. Whatever happens, noserious harm will be done to your printer. To clear thesituation, just reset the printer (hold On Line and pressForm Feed for approximately 3 seconds).PCL III + Multiple ESCape SequencesIf the consecutive ESCape sequences you send to theprinter have the same two characters after the characterESC, you can save time by sending a single multiple ESCsequence to the printer. This multiple sequence will consistof the ESC character, the two common character whichfollow ESC and the remaining characters of each individualcommand.E.g.: if you have to send the sequences: ESC ( s 3 B,ESC ( s 3 T and ESC ( s 1 Q, you can do so using themultiple sequence ESC ( s 3 b 3 t 1 Q. Note that the lastcharacter of the first two sequences “B” and “T” havebecome lower case (“b” and “t” respectively), while the lastcharacter of the last sequence (“Q”) has remainedupper-case (indicating, thus, the end of the multiplesequence).PCL III + Attribute Selection PriorityFontThe font selection MUST ALWAYS be indicated in thefollowing order:1. Print orientation (PORTRAIT or LANDSCAPE)2. Character set (CP 437, etc.)3. Character position on the print line (normal, superscript,subscript)