User manual

A-18 HS-51/HS-51X Wireless Handheld Reader User Manual
Communications Protocol
Appendix D — Communications Protocol
Communications 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