HP LineJet Printers - IGP/PGL Technical Reference Manual, 171250-001PX
Using the EVFU
287
3. Data bit 5 must be 0 (not set).
OR:
1. The PI line must be disabled or low;
2. Bits 7 and 6 must be 0 (not set); and
3. Data bit 5 must be 1 (set).
Given these conditions, the lower four bits of a byte specify the EVFU channel
number. Table 25 lists the EVFU channels and their equivalent data bytes
when the PI line is enabled; Table 26 lists the EVFU channel and their
equivalent data bytes when the PI line is disabled.
Table 25. EVFU Codes — PI Line Enabled
ASCII Channel
Hex
00
01
02
03
04
05
06
07
08
09
0A
0B
0C
0D
0E
7654321
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
X
X
X
X
X
X
X
X
X
X
X
X
X
X
0
0
X
X
X
X
X
X
X
X
X
X
X
X
X
X
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
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
15
16
Dec
0F
1
0
2
3
4
5
6
7
8
9
10
11
12
13
14
15
X = Undefined, 0 or 1 1 = High 0 = Low
8*
Data Bits
NUL
SOH
STX
ETX
EOT
ENQ
ACK
BEL
BS
HT
LF
VT
FF
CR
SO
SI
Code
6E 1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
1
Start Load
End Load
6F
110
111
n
o
Note *The ASCII values in Table 25 assume that all undefined bits
are set to 0. When the PI line is enabled, data bit 8 is the PI
line on a serial interface, and data bit 8 is undefined on a
parallel interface.