A-72 QX-830 Compact Industrial Scanner User’s Manual
Protocol Commands
Appendix E — Protocol Commands
Communication Protocol Command Table
Protocol Command
(Mnemonic displayed on menu)
Control Characters
(Entered in menu or
serial command)
Hex
Value
Effect of Command
RES ^D 04 Reset
REQ ^E 05 Request
EOT ^D 04 Reset
STX ^B 02 Start of Text
ETX ^C 03 End of Text
ACK ^F 06 Acknowledge
NAK ^U 15 Negative Acknowledge
XON ^Q 11 Begin Transmission
XOFF ^S 13 Stop Transmission
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