Honeywell 2020 - Manual (Page 59)

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2020 Host Escape Commands
Command Action
<ESC> a Indicate as if successful menu change made
<ESC> b Indicate as if unsuccessful menu change made
<ESC> 1 Illuminate green LED for 135 milliseconds (followed by at
least 70 mSecs. dark time when multiple blinks)
<ESC> 2 Illuminate green LED for two seconds (followed by at least
500 mSecs. dark time when multiple blinks)
<ESC> 3 Illuminate green LED for five seconds (followed by at least
500 mSecs. dark time when multiple blinks)
<ESC> 4 One beep at low pitch tone
<ESC> 5 One beep at medium pitch tone
<ESC> 6 One beep at high pitch tone
<ESC> 7 Indicate as successful decode and communication to host.
<ESC> 8 Indicate as unsuccessful decode and communication to host.
1) Good Read
3) ACK: Host to Base
4) ACK: Base to Image
Scanner
2) Base sends
data to host