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RS-232—Output to host system
MB/NX/RM/00/E/970131
131
ENQ / ACK / NAK software protocol
When ENQ/ACK/NAK is active, the MicroBar NX beeps after transmission when there is a
good read. You must change this parameter if you want Beep Before Transmission
(
Ð
Beeps / Indicator LED - Timing of good read beeps ).
6 error beeps indicate a transmission failure if the timeout expires before transmission
(
Ð
Hardware/software protocols timeout above in this section).
ENQ/ACK/NAK is exclusive with the XON/XOFF and RTS/CTS transmission protocols.
Typical ENQ / ACK / NAK scenarios
host terminal
ACK
(clears message)
message
(OK)
ENQ
MicroBar NX
host terminal
message
(not OK)
NAK
ENQ
ACK
(clears message)
repeats message
(OK)
MicroBar NX
Summary of Contents for MicroBar NX
Page 1: ...MB NX RM 00 E 970131 M i c r o B a r N X Reference Manual Preliminary Edition January 1997...
Page 10: ...Contents x Contents MB NX RM 00 E 970131...
Page 177: ...Symbologies EAN 128 MB NX RM 00 E 970131 167 Symbologies EAN 128 Symbologies Code 128 EAN 128...
Page 201: ...MB NX RM 00 E 970131 Number codes 1 2 3 4 5 6 7 8 9 0 End Selection...