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Chapter
3
ANSI EVFU
ASCII
Hex
Dec.
Code
10
16
DLE
11
17
DC1
12
18
DC2
13
19
DC3
14
20
DC4
15
21
NAK
16
22
SYN
17
23
ETB
18
24
CAN
19
25
EM
1A
26
SUB
1B
27
ESC
1C
28
FS
1D
29
GS
1E
30
RS
1F
31
US
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.
66
Table 21. P-Series EVFU Line Slewing
PI
8
7
6
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
X
X
1
X
0
0
1
X
0
0
(X = Undefined, 0, or 1) (1 = High) (0 = Low)
Data Bits
5
4
3
2
1
0
0
0
1
0
0
0
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
0
1
1
1
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
1
1
0
1
1
1
1
0
1
1
1
0
1
1
1
1
1
1
1
1
Lines
Slewed
1
0
1
1
2
0
3
1
4
0
5
1
6
0
7
1
8
0
9
1
10
0
11
1
12
0
13
1
14
0
15
1
16
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