Honeywell 2020 User Manual page 178

n B The bottom edge of the shipped image corresponds to row n - 1
of the image in memory. Range: 000 - 480. (Default = all rows)
Uncropped Image:
Example of Image Crop set to
200B:
Alternately, specify the number of pixels to cut from the outside margin of the
image; thus only the center pixels are transmitted.
n M Margin: cut n columns from the left, n + 1 columns from the right,
n rows from the top, and n + 1 rows from the bottom of the image.
Ship the remaining center pixels. Range: 0 - 238.
(Default = 0, or full image)
P - Protocol
Used for shipping an image. Protocol covers two features of the image data
being sent to the host. It addresses the protocol used to send the data
(Hmodem, which is an Xmodem 1K variant that has additional header
information), and the format of the image data that is sent.
0P None (raw data)
2P None (default for USB)
3P Hmodem compressed (default for RS-232)
4P Hmodem
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Example of Image
Crop set to 300R:
Example of Image Crop set to
200T:
Example of Image Crop
set to 238M:
Example of Image
Crop set to 300L: