Block data structure

Block data consists of a 6-byte information block followed by n lines of image data (n is the value of the line counter in the information block).

You specify block data transfer with the ESC d (set line counter) command. By sending multiple lines of data at once, you can shorten the total data transfer time.

The information block size is fixed at 6 bytes. You can use the byte counter and line counter in the information block to determine the amount of data (number of bytes).

Information block

An information block is included in all data blocks; and provides information on the beginning of the data block, the current state of the scanner, and the length of the data that follows.

Header

This byte is always set to the STX code (02H), and indicates the beginning of the data block.

Command Usage 2-27