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Printronix P9000 Series User Manual

Page 85

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5-5

Vertical Format Units

Table 5-2. P-Series EVFU Codes - PI Line Disabled or Not Used

Hex

10
11
12
13
14
15
16
17
18
19
1A
1B
1C
1D
1E
1F

7 6

5

4

3

2 1

0
0

0
0

0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1

0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1

0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1

0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1

1 (TOF)
2
3
4
5
6
7
8
9

10
11
12 (VT)
13
14
Start Load
End Load

Dec

16
17
18
19

20
21
22
23
24
25
26
27
28
29
30
31

1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1

X = Undefined, 0 or 1

1 = High

0 = Low

ASCII

Channel

Data Bits

8

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

0
0

Code

DLE
DC1
DC2
DC3
DC4
NAK
SYN
ETB
CAN
EM
SUB
ESC
FS
GS
RS
US

NOTE: The ESC code cannot be used simultaneously as the EVFU VT code and the

Special Function Control Character (SFCC). If ESC is used as the SFCC, the EVFU

must be used with the PI line enabled and set high. Refer to the Configuration chapter for

more information on the SFCC.

Clearing the EVFU Memory

The following actions will reset (clear) the EVFU memory:

1.

Sending only the start load code.

2.

Sending a start load code followed immediately by an end load code.

3.

A second start load code is received, resulting in reinitialization of the EVFU. (This alĆ

lows the host data to be restarted.)

When the EVFU memory is cleared, the forms length returns to the previously set value and

the current print position becomes the top-of-form (TOF).

Relative Line Slewing

Another method of moving paper using the PI line results in vertical slews of a specified numĆ

ber of lines within the form relative to the current print line (rather than slewing to a specific

line). For this to occur, three criteria must be met: