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11. Online Information
MPCL is a standard printer control language developed for
Monarch printers. It is designed to work in ASCII (MS-DOS) or
EBCDIC (mainframe) environments. This chapter describes
MPCL structure and syntax.
Data Stream Structure
The computer sends data to the printer in
packets
. A packet is
a string of ASCII characters consisting of
• a starting token: {
• a sequence of characters and instructions
• an ending token: }
There are four types of packets: check digit packets, format
packets, batch packets, and exception packets.
A data stream is made up of a series of
records
. A text field
definition is an example of a record. Records are constructed
with a set of parameters, which are separated by commas. A
format can contain up to 14 text, non-printable text, and bar
code records. Additionally, a format may contain lines, boxes,
and constant text overlays. Use only uppercase characters,
except in character strings enclosed in quotation marks.
Online Information
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