A.4 Commands

(a)Window identifier: Byte 0

Specifies a unique value that identifies a window. The value must be 0 (00h), if the window data is front-side. The value must be 128 (80h), if the window data is back-side. If two or more window identifiers are specified for a single set of window data, the most recently specified identifier is validated.

Status:

B’00001’ (CHECK CONDITION)

Sense key: X’5’(ILLEGAL REQUEST)

(b)Auto: Byte 1

This scanner does not support Auto. If a value other than 0 is specified, this scanner returns the following error information:

Status:

B’00001’ (CHECK CONDITION)

Sense key: X’5’ (ILLEGAL REQUEST)

(c)X, Y resolution (XR, YR) : Bytes 2 to 3 and 4 to 5

Specified here are the resolutions in the horizontal (X) and vertical (Y) scanning directions, in pixels per inch. If 0 is specified, the default value (400 dpi) is assumed.

If the image processing option is not equipped, the acceptable resolution value is as follows.

Binary reading

0,

600,

400, 300, 240, 200, 150 or 100

 

 

 

 

Gray scale reading

0,

400,

300, 240, 200, 150 or 100

 

 

 

 

If the option is equipped the acceptable value is in the range as follows.

Binary reading

0 or 50 to 800 dpi with 1 dpi step

 

 

Gray scale

0 or 50 to 400 dpi with 1 dpi step

reading

 

 

 

If the values are specified that does not comply with these conditions, the scanner returns the following error information.

Status:

B’00001’ (CHECK CONDITION)

Sense key: X’5’ (ILLEGAL REQUEST)

The value of back-side reading must be 0 or the same value as front-side. Otherwise, the above error information may be returned.

(d)Upper left X, Y (ULX, ULY) : Bytes 6 to 9, A to D

Specified here are the X and Y coordinates of the upper-left corner of the window. The coordinates are expressed in units of 1/1200 inches relative to the upper-left corner of the maximum scan area.

Appendix A-53