Device Control Command Set
Notes:
1. The lowest value of each Print Quality range of values is used in the XOH
OPC Print Quality Support SDF (see “Print Quality Support Self-Defining
Field” on page 59).
2. The printer implements fixed association between some FGIDs and Print
Qualities. The printer changes FGIDs to satisfy quality selections for all
supported code pages except OCR (340), OCR-A (892), or OCR-B (893). It
does not change the selected code page to provide a requested quality.
Execute Order Home State (XOH)
Length D68F Flag Correlation ID
(Optional)
Data
Subcommand Subcommand
Data
The Execute Order Home State command identifies a set of subcommands
(orders) for formatting physical mediums of data, printing groups of physical
mediums, and managing the fonts, page segments, and overlays. This command
is only valid while the printer is in the home state.
The data field contains a two byte order, called the subcommand, and a
subcommand data field. There is only one subcommand for a single XOH
command. The subcommand data field contains parameters for that order.
The valid orders for the XOH command for the IBM 64XX Line Matrix Printers
are:
Order Description
0100 Print Buffered Data (PBD)
0500 Erase Residual Print Data (ERPD)
1700 Set Media Size (SMS)
F300 Obtain Printer Characteristics (OPC)
Print Buffered Data (PBD)
This subcommand causes the printer to print all buffered data pages prior to
sending the Acknowledgment Reply, if requested. The print buffer clears at the
completion of this command.
Erase Residual Print Data (ERPD)
This is a data security and privacy order. This order causes the printer to first
complete a Print Buffered Data order, then delete all page segments, overlays,
and buffered page data (text, image, graphics, and bar codes) from the printer
storage.
50 6400 IPDS
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