Denso QK20-R, User Manual

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9.4 Communication Format
Data transmission format
Select one of the following two data transmission formats.
No. of digits
Header
Scanner
ID
Code ID
mark
Prefix
n1 n2 n3 n4
Code data Suffix Terminator BCC
No. of digits
Header
Scanner
ID
Prefix
Code ID
mark
n1 n2 n3 n4
Code data Suffix Terminator BCC
(1) Header/Terminator
The following choices are available.
RS-232C interface, USB-COM interface
Header:
None (default), STX, or user-defined one
Terminator: CR (default), none, LF, CR/LF, ETX, or user-defined one
USB keyboard interface
Header:
None (default), TAB, ESC, ENTER or others
Terminator: None, TAB, ESC, ENTER (default) or others
For details, refer to Chapter 10.
(2) Scanner ID
A scanner ID is a unique serial number assigned to an individual scanner at the time of shipment. It consists of six
numerals.
(3) Prefix/Suffix
A prefix or suffix consists of up to eight ASCII characters (00h to FFh). You can set a prefix or suffix with the
configuration software (ScannerSetting_2D). (Default: No prefix or suffix)
(4) BCC
The Block Character Check (BCC) exclusive-ORs all bits at the same bit level in characters following the header and
preceding the terminator in a transmission block to generate a horizontal parity byte to be transferred in a binary code.
The BCC can be enabled or disabled. If no header is prefixed or the USB keyboard interface is selected, no BCC will
be transferred.