GS ( A pL pH n m
[Name] Execute test print
[Format] ASCII GS ( A p
L pH n m
Hex 1D 28 41 pL pH n m
Decimal 29 40 65 pL pH n m
[Range] (p
L + pH × 256) = 2 (pL = 2, pH = 0)
0 ≤ n ≤ 2, 48 ≤ n ≤ 50
1 ≤ m ≤ 3, 49 ≤ m ≤ 51
[Description] • Executes a specified test print.
• pL, pH specify (pL + pH × 256) as the number of bytes after pH (n and m).
• n specifies paper used for the test print.
n Paper source
0, 48 Basic sheet (roll paper)
1, 49
2, 50
Roll paper
• m specifies a test pattern.
m Test pattern
1, 49 Hexadecimal dump print
2, 50 Printer status print
3, 51 Rolling pattern print
[Notes] • The printer executes a software reset after processing this command.
• Clears the receive and print buffers.
• Resets all setting values in RAM (the print area, the character styles, user-defined
characters, and others) that were in effect at power on. (The data in the NV memory
is not reset.)
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