| IBM | Commands |
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| Function | (ASCII, Decimal, Hexadecimal) |
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| Pc: specifies the control information. |
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| Pc | Description |
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| bit0sets the check digit. |
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| 0: does not add check digit. |
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| 1: add check digit. |
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| bit1sets the |
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| 0: performs print. |
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| 1: does not perform print. |
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| bit2(reserved) |
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| bit3(reserved) |
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| bit4(reserved) |
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| bit5(reserved) |
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| bit6(reserved) |
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| bit7(reserved) |
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| Print Barcode | ASCII: ESC [ f Ln Hn DATA | Prints the barcode. |
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| Ln Hn: indicates the byte number (= |
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| Ln+Hn x 256) of the parameter located |
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| after Ln Hn |
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| DATA: Barcode data |
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| Print Features |
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| Select LQ Typeface | ASCII: ESC k n | OKI unique command. Selects typeface |
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| Dec: 27 107 n | according to value of n: |
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| Hex: 1B 6B n | n=0: Roman |
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| n=1: Swiss |
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| n=2: Courier |
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| n=3: Prestige |
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| n=4: Script |
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| n=5: |
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| n=6: |
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| n=7: Orator |
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| n=8: |
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| n=122: Swiss Bold |
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| n=124: Gothic |
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| Select Font | ASCII: ESC [I j h Hfid Lfid Hfwd Lfwd fa | Sets the font typeface, character width |
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| Nul Hc Lc | and spacing attributes. |
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| Dec: 27 91 73 j h Hfid Lfid Hfwd Lfwd fa | j, h: set number of parameters to follow, |
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| Nul Hc Lc | calculated as j + (h x 256) bytes |
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| Hex: 1B 5B 49 j h Hfid Lfid Hfwd Lfwd fa | j, h=0 or1: command invalid |
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| Nul Hc Lc | j, h=2, 3: fid setting valid, other modes |
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| unchanged |
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| j, h=4: fid, fwd settings valid; fa un- |
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| changed |
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| j, h=5: all settings valid |
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| j, h=6 or more: all settings and parame- |
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| ter data beyond 6 bytes will be ignored |
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ML790/791 Printer Handbook | 109 |