Confidential
EPSON
TITLE
SHEET
REVISION
NO.
SHEET
NEXT
TM-U220A
Specification
(For Argentina Fiscal)
41
42
A
6. COMMANDS
6.1 Command Notation
XXXX
[Name]
The name of the command.
[Format]
The code sequence.
[ ]k
indicates the contents of the [ ] should be repeated
k
times.
[Range]
Gives the allowable ranges, if any, for the arguments.
[Default]
Gives the default values, if any, for the command parameters.
[Description] Describes the function of the command.
”
−
“ in the table indicates 0 or 1.
[Notes]
Provides important information on setting and using the printer command, if necessary.
[Reference] Gives references, if any.
6.2 Explanation of Terms
1) Real-time command
Real-time commands are identified with a
DLE
extension such as
DLE EOT
,
DLE ENQ
or
DLE
DC4
. The printer executes these commands as soon as they are received.
2) Obsolete command
Obsolete commands are commands that will not be supported by future printer models. Therefore,
we recommend replacing them with more recent, upward-compatible commands that have the
same functions.
3) NV memory write command
NV memory write commands deletes or stores data in the NV memory (flash ROM)
GS ( C
<some functions>,
GS ( E
<some functions>,
FS q
4) ESC/ POS handshaking protocol
ESC/ POS handshaking protocol is a handshaking protocol between the host PC and the printer
when the printer transmits data. The ESC/ POS handshaking protocol is required if the following
commands are executed:
GS ( C
<some functions>
5) Print buffer
The print buffer is used to store image data for printing.
6) Receive buffer
The receive buffer is used to store data from the host PC. All received data is stored in this
buffer and processed in the order received.
7) The horizontal or vertical motion units
The horizontal or vertical motion units are used for calculating the setting values for various
commands and are [Horizontal direction: 0.159 mm {1/160"} / Vertical direction: 0.176 mm
{1/144"}.
8) The left edge of the printing area
The left edge of the printing area indicates the first column for character(s) to be developed.
