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Parameters are refined by the selected printer.
  • EU-m30
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  • TM-U220II
  • TM-U230

GS ( C   <Function 4>


[Name]

Transmit the remaining capacity of the NV user memory

[Format]

ASCII
   
GS
  
(
  
C
  
pL
  
pH
  
m
  
fn
  
b
Hex
1D
28
43
03
00
00
fn
00
Decimal
29
40
67
3
0
0
fn
0

[Range]

(pL + pH × 256) = 3
m = 0
fn = 4, 52
b = 0

[Description]

Transmits the number of bytes of remaining memory (unused area) in the NV user memory.
  • ESC/POS Handshaking Protocol is not required for this function.

[Notes]

  • With this function, the printer sends the "Header to NUL" data shown below:
  • Send data
    Hex
    Decimal
    Number of bytes
    Header
    37h
    55
    1 byte
    Identifier
    29h
    41
    1 byte
    Available Capacity (∗1)
    30h – 39h
    48 – 57
    1 – 8 bytes
    NUL
    00h
    0
    1 byte
  • (∗1) 
    The available capacity indicates the number of bytes not being used. The decimal value for the available capacity is converted to ASCII character data and sent from the most significant digit.
    Example: 
    When 120 bytes is available (not being used), the number 120 is expressed with 3 bytes of data (Hexadecimal: 31h, 32h, and 30h / Decimal numbers = 49, 50, and 48).
  • See [Notes for transmission process] for process sending data group.
 

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ESC/POS® includes patented or patent pending commands. The contents must not be disclosed to third parties.


ESC/POS® Command Reference for TM Printers

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