Logical Page Descriptor (Lpd) - IBM 6400 Programmer's Reference Manual

Logical Page Descriptor (LPD)

Length D6CF Flag
This command establishes the print characteristics for the logical page. The
Logical Page Descriptor command is only valid in the home state. See "XOH Set
Media Size (SMS)" on page 51 for physical medium size information.
The format of the data field (DATA) for this command is:
Before the printer can present a page of data it must know the following:
The controls established in a Logical Page Descriptor command remain in effect
until the next Logical Page Descriptor is received unless superseded by explicit
controls in other commands (see "Write Text (WT)" on page 62). In any case,
the latest LPD control values are restored with each Begin Page or Begin
Overlay command.
The LPD command is valid with 24, 28, 34, 36, 38, 40, 41 or 43 bytes. The 64XX
accept the LPD command using any of these valid lengths.
Table 14 (Page 1 of 2). Logical Page Descriptor
Byte Value
0
X 00
' '
1
2-3
X ' 3840
X 0960
'
4-5
X ' 3840
X 0960
'
6
7-9 X 000001
'
X ' 007FFF
10
11-13 X 000001
'
X 007FFF
'
14
15
Bit 0
Bits 1-7
16-23
24-25
X ' 0000
X 5A00
'
X FFFF
'
Correlation ID
(Optional)
The units in which distances have been measured
•
The boundaries of the logical page
•
Initialization values for control parameters (margins, line spacing, and so on)
•
Description
Unit-Base (Measurement Units)
10 inches
Reserved
X and I L-units per unit base
' 14400 L-units per 10 inches
2400 L-units per 10 inches
'
Y and B L-units per unit base
' 14400 L-units per 10 inches
2400 L-units per 10 inches
'
Reserved
- X-Extent of logical page (Width). See "Notation
'
' Conventions" on page 27
Reserved
- Y-Extent of logical page (Length) See "Notation
'
Conventions" on page 27
'
Reserved
Ordered Data Flag Bit
0/1 Order Page = 1
0000000 Reserved
Reserved
I-Axis Orientation
' 0 Degrees
180 Degrees
'
Printer Default
'
Device Control Command Set
DATA
Chapter 3. IPDS Commands Reference
Error Code
X 0264..02
' '
X ' 0260..02 '
X ' 0261..02 '
X 0262..02
' '
X 0263..02
' '
X ' 0268..02 '
39