Printronix ANSI Printer manual Ansi Evfu Series Evfu Line Slewing, Data Bits Lines Hex Dec Code

Chapter 3 ANSI EVFU

Table 21. P-Series EVFU Line Slewing

	ASCII						Data Bits					Lines
Hex	Dec.	Code	PI	8	7	6	5	4	3	2	1	Slewed
10	16	DLE	1	X	X	X	1	0	0	0	0	1
11	17	DC1	1	X	X	X	1	0	0	0	1	2
12	18	DC2	1	X	X	X	1	0	0	1	0	3
13	19	DC3	1	X	X	X	1	0	0	1	1	4
14	20	DC4	1	X	X	X	1	0	1	0	0	5
15	21	NAK	1	X	X	X	1	0	1	0	1	6
16	22	SYN	1	X	X	X	1	0	1	1	0	7
17	23	ETB	1	X	X	X	1	0	1	1	1	8
18	24	CAN	1	X	X	X	1	1	0	0	0	9
19	25	EM	1	X	X	X	1	1	0	0	1	10
1A	26	SUB	1	X	X	X	1	1	0	1	0	11
1B	27	ESC	1	X	X	X	1	1	0	1	1	12
1C	28	FS	1	X	X	X	1	1	1	0	0	13
1D	29	GS	1	X	X	X	1	1	1	0	1	14
1E	30	RS	1	X	0	0	1	1	1	1	0	15
1F	31	US	1	X	0	0	1	1	1	1	1	16

(X = Undefined, 0, or 1) (1 = High) (0 = Low)

ANSI EVFU

Rapid vertical paper movement is called slewing. A vertical format unit (VFU) is a table, or program, of vertical tabs that enable the printer to slew paper to preset locations on a page.

The preset locations are identified by codes, or channels. The first line channel code defines the first line on the form; the second line channel defines the second line on the form, etc. Each line must have a channel. Filler channel codes are used for lines that will not be accessed by the print program. Two bytes are required for each line of the form.

Any channel code can be used as a filler except channel code 1, which is reserved for the top-of-form, and channel code 12, which is reserved as the vertical tab channel. The same filler channel code can be repeated as necessary for any number of lines.

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