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The 9474 printer can receive print data online from a host.
During online communication, the host treats the printer as an
RS-232 type printer. For the printer to communicate online, you
will need an RS-232 cable. For mainframe communication, you
may need a protocol converter.
Transmitting data from the host requires communication controls.
See Chapter 2, "Communication Requirements" for more
information.
Three types of data can be transmitted:
Format data The user-designed layout for online formats.
These formats are used by online batches for
printing.
These online formats can also be used
offline. However, formats created offline
cannot be used online.
Batch data Contains the format number and actual data
to be printed on the supply. Batch data is
downloaded to the printer and combined with
a format stored in the printer.
Graphic data Contains the actual pixel data which forms a
graphic image.
Format, batch, and graphic data are stored
when you turn the power off.
Format and graphic data may be sent at any time.
Since batch data is combined with a format for printing, the format
and graphic data for a batch must reside in the printer before
sending the batch.
Each data type has its own data stream structure. See Chapter 3,
"Message Structures" for more information.
1-2 Introduction