Device Control Command Set
Obtain Printer Characteristics (OPC)
This order is a host request for information about the current printer
characteristics. The printer responds by placing the requested information,
identified as an acknowledgement type X
'06', in the Special Data (SD) area of a
subsequent Acknowledge Reply. The printer reply is a series of self-defining
fields that requires multiple acknowledge reply buffers. After each buffer is
returned, and if the user application requests ACK continuation by sending a
command with the flag byte set to (bit 0 and bit 2 equals 1) X
'A0', the
subsequent buffer is returned until all data is sent.
Acknowledge Reply for Obtain Printer Characteristics
Length D6FF Flag Correlation ID
(Optional)
Data
Table 30. Data Area-Acknowledge Reply for Obtain Printer Characteristics
Data Area (Byte) Description
0-23 Printable Area Self-Defining Field
24-33 Image and Coded Font Resolution Self-Defining Field
34-48 Storage Pools Self-Defining Field
49-54 Color Support Self-Defining Field
55-326 Resident Symbol Set-Defining Field
327-333 Print Quality Support Self-Defining Field
334-339 XOA RRL RT & RIDF Support SDF
340-346 Common Bar Code Type/Modified Self-Defining Field
347-353
or
354-413
Product Identifier (7-byte)
and
Product Identifier SDF (60-byte)
The self-defining fields contain specific information about the printer
characteristics.
The following charts describe these self-defining fields.
Printable Area Self-Defining Field: Page extents are set at initialization time to
reflect the operator panel settings. The Set Media Size command can change
the page extents.
Table 31 (Page 1 of 2). Printable Area Self-Defining Field
Byte Value Description
0-1 X'0018' Length of this Self Defining Field
2-3 X'0001' Printable Area Self Defining Field ID
4 X'FF' Default Input Media Source
5 X'00' Reserved
6 X'00' Unit Base 10 inches
7 X'00' Reserved
8-9 X'3840' L-units per Unit Base
52 6400 IPDS
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