Control Codes
Horizontal Motion Control
Several commands can be used to control the horizontal position of characters. Many applications use space control to position fields. However, the Epic 880TM Printer has the ability to control character position with horizontal tab stops. This is done using the horizontal tab [HT] to move to those tab stops.
[HT] | Horizontal tab |
ASCII [HT]
Hexadecimal 09H
Decimal <9>
IPCL &%HT
EPOS [HT]
Description The [HT] command inserts spaces in the print buffer up to the next tab stop. The default tab locations are every eight spaces.
[BS] | Back space |
ASCII [BS]
Hexadecimal 08H
Decimal <8>
IPCL &%BS
EPOS [BS]
Description The [BS] command moves the print buffer one character width to the left. The pointer position cannot be moved to the left of the left margin. [BS] does not cause the buffer to be printed; rather, the following data is OR’ed with the previous data.
[ESC] D Set horizontal tab stops
ASCII | [ESC] D <n1> <n2> <n3> ... <ni> 0 | |
Hexadecimal | 1BH 44H <n1> <n2> <n3> ... <ni> 00H | |
Decimal | <27> <68> <n1> <n2> <n3> ... <ni> <0> | |
IPCL | none |
|
EPOS | [ESC] D <n1> <n2> <n3> ... <ni> 0 | |
Description The [ESC] D <n1> <n2> <n3> ... <ni> 0 command sets tab stops at the character columns specified by <n>. The end of the settings is specified by a <0>. All previously set tabs will be cleared. Column sizes are in accordance with the current character pitch. Setting tabs that are beyond the station width is possible. A [CR] is inserted when the tab is used. Printing begins at the home position. The power up default is every eight spaces, i.e., 9, 17, 25, and so on; use the
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