Printronix S828 Programmer's Manual page 143

Programmer Manual
Order Description
F800 Print Quality Control (PQC)
Activate Printer Alarm (APA)
The XOA Activate Printer Alarm (APA) subcommand signals the printer to activate the alarm mechanism.
As long as the printers alarm function is enabled, the alarm will be turned on in response to this command.
It will remain on until Stop is pressed.
After processing this command, the printer continues to process the incoming IPDS data stream. If
synchronization of actions is desired, the application must ensure if the appropriate commands are sent to
the printer.
Discard Buffered Data (DBD)
The XOA Discard Buffered Data (DBD) subcommand deletes all buffered data from the printer storage and
returns the printer to home state. Any data currently being received is deleted. If this order is syntactically
correct, no exceptions can result from its execution. The DBD order does not affect completely received
resources, such as fonts, page segments, and overlays; however, if the printer is in any resource state, the
printer deletes the partial resource before returning to home state. If the printer is in Ordered Page Mode,
the subcommand prints all buffered data to the point of the command, does a page eject, and returns to
Home State.
The DBD order is a synchronizing command. Any command following a synchronizing command is not
processed until all preceding commands have been completely processed. Also, the ACK of the DBD order
is not returned until DBD processing is complete.
Request Resource List (RRL)
This subcommand is a request from the host application program for the printer to identify resources
currently allocated in the printer. The printer responds by placing the requested information in the Special
Data (SD) area of a subsequent Acknowledge Reply.
The subcommand and subcommand data field has the following format:
Decimal Hex
0-1 0-1
2 2
3-4 3-4
5 5
6 6
7 7
8-9 8-9
Chapter 5 IPDS Programming Information
Value Description
F400 RRL Order Code
FF Device Defined Ordering
XXXX Entry Continuation Indicator (See Note 1)
03 - FF Entry Length
Resource Type Requested (See Note 2)
01 Single Byte Fonts
04 Page Segments
05 Overlays
FF All Resources
00 Resource ID Format
Host-Assigned Resource ID
XXXX Resource ID (See Note 2)
141
PTX‐S828
260071‐001A