IBM 6400 Programmer's Reference

Device Control Command Set
Table 7. Acknowledgement Reply
Byte Value Description Error Code
0
X'00'
X'01'
X'04'
X'06'
X'80'
Acknowledgment Type:
A one byte field that identifies the type
of acknowledgement record and contents
(if any) of the Special Data area.
None
Sense Type and Model
Request Resource List
Obtain Printer Characteristics
Sense Bytes
1-2 X'0000' -X'FFFF' Stacked Page Counter. See Note 1.
3-4 X'0000' Stacked Copy Counter. See Note 1.
5-n Byte: This area contains zero or more bytes of
additional data as requested by the host program
defined by the Acknowledgement Type. Also see
note 2.
Notes:
1. Page (or Copy) Counters - This field identifies how many stacked pages
(Begin Page ... End Page) have been successfully completed.
2. Special Data (SD) - Depending on the acknowledgment type (byte 0), this
field either is omitted or contains the requested data or the sense data. The
value in the two byte length field in the Acknowledge Reply header
determines the amount of data this command returns to the host.
Begin Page (BP)
Length D6AF Flag Correlation ID
(Optional)
DATA
This command is valid only in the home state and causes the printer to enter the
page state. The printer ignores the contents of the data field for this command.
However, the data field must contain four bytes of data.
Deactivate Font
Length D64F Flag Correlation ID
(Optional)
DATA
This command transmits one to six bytes of data to effect the deactivation of one
or more coded fonts.
Chapter 3. IPDS Commands Reference 31

IBM 6400 Specifications

General

Brand	IBM
Model	6400
Category	Printer
Language	English