Epson GS ( C pL pH m fn b <Function 5>

CONFIDENTIAL
Paper roll Customize commands GS ( C
Ver. 10.0 1 p. 567
GS ( C pL pH m fn b <Function 5>
[Name] Transmit the key code list
[Format] ASCII GS ( C pLpHmfnb
Hex 1D 28 43 03 00 00 fn 00
Decimal 294067 300fn0
[Range] ( pL + pH × 256) = 3 ( pL = 3, pH = 0)
m = 0
fn = 5, 53
b = 0
[Description] Transmits the key code list in the NV user memory.
• ESC/POS Handshaking Protocol is required for this function.
[Notes] ■When record exists, the printer sends the “Header to NUL” data as shown below:
(*1) When the quantity of stored data exceeds 40 records, the printer performs partial processing, using the
following rules:
• If there is unsent data, the identification status of the third byte is 41H or 65 decimal.
• If there is no unsent data, the identification status of the third byte is 40H or 64 decimal.
Send data Hex Decimal Data quantity
Header 37H 55 1 byte
Identifier 71H 113 1 byte
Identification status (*1) (*2) 40H or 41H 64 or 65 1 byte
Data (*3) 20H − 7EH 32 − 126 2 − 80 bytes
NUL 00H 0 1 byte