Epson 100-88002 manual Function Set bar code width, ESC EM W n, BW m, GS w n, ESC EM J n, BJ m 1 m

Control Codes

Function	Set bar code width
ASCII	[ESC] [EM] W <n>
Hexadecimal		1BH 19H 57H <n>
Decimal	<27> <25> <87> <n>
IPCL	&%BW <m>
EPOS	[GS] w <n>

Description The [ESC] [EM] w <n> command sets the minimum bar width. The value may be between 1 and 8. The default is 3.

Note: A value of 1 may result in barcodes that are unreadable with some readers.

Function	Set bar code justification, human readable interpretation (HRI) character
print mode, and print direction
ASCII	[ESC] [EM] J <n>
Hexadecimal		1BH 19H 4AH <n>
Decimal	<27> <25> <74> <n>
IPCL	&%BJ <m1> <m2>
EPOS	none

The power on default is center justified with HRI characters not printed.

Description The [ESC] [EM] J <n> command selects the operation of the bar code justification, HRI characters, and print direction.

Where n bits		n	IPCL	76543210
		------	xx	Justified
0	00	------	00	Left
1	01	------	01	Center

202 ------10 Right

		--xx	----HRI characters
0	00	--00	----Not printed
16	16	--01	----Printed above the bar code
32	32	--10	----Printed below the bar code
48	48	--11	----Printed above and below the bar code
		-x------	Vertical print mode. (Page mode may
			work better)
0	00	-0------	Bar code printed in horizontal
			direction (default)
64	64	-100	----Bar code printed in vertical direction

Note 1: The [ESC] [EM] J <n> command only affects bar code printing.

Note 2: HRI is not available in vertical print mode. You may print normal barcodes in page mode, which will provide for HRI and significantly longer barcodes.

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