Printronix ThermaLine Series manual Data field, Sfcc

	The same character must be used at both ends of the
	data field, but it will not print with the data.
data field	Enter the data for the bar code. A null data field (no
	characters) is permitted. Whenever a string of 6 or
	more contiguous numeric digits are detected, the
	IGP/PGL automatically inserts a Code C at the start of
	the numeric string and outputs numeric digit pairs
	packed into single bar code characters.
	When the string is broken (non±numeric data or an
	unpaired numeric digit occurs), the IGP/PGL
	automatically inserts a Code B and returns to normal
	C128B symbols. The length of the data field is
	variable; however, the maximum length is usually
	limited to 32 characters to minimize potential reading
	errors. The data field can contain any of the characters
	listed in Table 5±13 and Table 5±14, except the system
	SFCC.
PDF	Optional parameter to enable printing of the human
	readable data field. Enter PDF to print the data field. If
	the parameter is not used, the human readable data will
	not print. This parameter is not allowed if a null data
	field was specified.
LOC	Optional parameter to identify the location of the
	printable data field. The default value is B, locating the
	human readable data below the bar code. A locates the
	printable data field above bar code. To compensate for
	printing the 0.1±inch high data, the height of the bar
	code body is reduced 0.1 inch.
FONT	Optional parameter to select the font for the human
	readable data field. The default value, N, selects the
	normal ASCII 10 cpi font. Enter O to select the
	OCR±A 10 cpi font; enter X to select the OCR±B 10
	cpi type font.
STOP	Ends the Bar Code command while the IGP/PGL
	continues in the Create Form Mode. Enter STOP. If
	STOP is not entered, an error message results.

5±46 Bar Codes