Epson ESC Manuale Utente Scaricare il pdf (Pagina 133)

100

101

B-26

In case the vertical scanning is performed normally:

between x , y and x , (y + w)

In case the vertical scanning is performed in inverse

direction:

between x , (y + w) and x , y

When the command is performed, the serial line sends the following message:

DC4 DC4 ESC ? n

Where n is a string of n bytes containing the decoded barcode.

If invalid parameters are encountered, or the scanning area goes outside the logical

page margins, n will have the value 0. If the reading was not successful, n = and the

string will be composed of 10 "?" characters.

y+w

1 2 ... 128 129 130 131 132 133 134 135 136 137 138 ... 287 288

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Epson ESC Manuale Utente Pagina 133

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