CITIZEN CT-S300 - Manual (Page 95)

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fn = 1: Function 1 Transferring to Printer Function Setting Mode
GS (E pL pH fn d1 d2 fn = 1
[Code] <1d>H<28>H<45>pL pH fn d1 d2
[Range] (pL + pH
× 256) = 3 (pL = 3, pH = 0)
fn = 1
d1 = 73 (“I”)
d2 = 78 (“N”)
[Outline] Transfers to printer function setting mode and sends the report of mode transfer.
Hex. No. of Data
Header 37H 1
ID 20H 1
NULL 00H 1