Epson 100-88002 manual Function Set bar code height, Ascii

Control Codes

v	Level	Code Word
48	Level 0	2
49	Level 1	4
50	Level 2	8
51	Level 3	16
52	Level 4	32
53	Level 5	64
54	Level 6	128
55	Level 7	256
56	Level 8	512

The second way is to determine correction level based on the amount of data in the barcode. This is determined by calculating a correction ration based on the formula: Cf = (v * 0.1 * Len)

		Cf	Level	Code Word
		0-3	Level 1	4
		4-10	Level 2	8
		11-20	Level 3	16
		21-45	Level 4	32
		46-100	Level 5	64
	101-200		Level 6	128
	201-400		Level 7	256
		401 Up	Level 8	512
Function	Set bar code height
ASCII	[ESC] [EM] B <n>
Hexadecimal		1BH 19H 42H <n>
Decimal	<27> <25> <66> <n>
IPCL	&%BH <m>
EPOS	[GS] h <n>

Description The [ESC] [EM] B <n> command sets the bar code height where <n>*24 is the number dots. The default is n = 4, and results in a barcode that is about 0.47 inches high.

100-88002 Rev B Page 139