7 - 22 DS7708 2D Vertical Slot Scanner Product Reference Guide
Software Handshaking (continued)
ENQ
When this option is selected, the scanner waits for an ENQ character from the host before transmitting data. If
an ENQ is not received within the Host Serial Response Time-out, the scanner issues an error indication and
discards the data. The host must transmit an ENQ character at least every Host Serial Response Time-out to
prevent transmission errors.
ENQ
ACK/NAK with ENQ
This combines the two previous options.
ACK/NAK with ENQ
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