Toshiba B-EP Series Interface Specification page 601

8.10.50 BARCODE HEIGHT COMMAND
Function Sets the barcode height.
Format [GS] hn
Term ASCII: GS h
Hex: 1Dh 68h
[Parameter]
n:
Default value n: 162
Explanation (1)
Reference Barcode Print Command ([GS] k)
No. of dots for the barcode height
1 ≤ n ≤ 255 (01h ≤ n ≤ FFh)
When "n" is set to any value other than the above, this command will be ignored.
CHAPTER 8 ESC/POS MODE (INTERFACE COMMANDS)
[GS] h
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B-EP Series