RS-232 Host Interface 6 - 25
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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