Printronix P3000 Series manual Serial Matrix Vertical Formatting, P-Series Dvfu Line Slewing

The Slew Relative configuration and the status of data bits 1 through 4 determine the number of lines slewed as described in Table 5–6. (Note that the state of data bit 5 is the difference between line slew- ing and using the interface lines as DVFU channel codes.) As long as the DVFU is selected, this type of vertical paper motion will occur, regardless of whether the DVFU memory is loaded or not.

If the Double High for One Line attribute is active, n + 1 lines are slewed rather than n lines.

Table 5–6. P–Series DVFU Line Slewing

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

*treated as CR = CR; refer to the Carriage Return control code on page 6–16.

Serial Matrix Vertical Formatting

In Serial Matrix protocol, vertical formatting is always enabled. Forms control is accomplished by a set of programmed vertical tabs. Various lines of the form are assigned vertical tabs which are then accessed by control code for rapid paper advancement to the tab position. Two codes are used for con- trolling vertical tabs: ESC B for single channel tab setting and VT to execute a vertical tab. These codes and their parameters are described in the Programming chapter. The VFU Loaded indicator on the con- trol panel will not glow when vertical tabs are loaded for forms control.

5–10 Vertical Format Units