11 - 12 Symbol MiniScan MSXX07 Series Integration Guide
Software HandshakingThis parameter offers control of the data transmission process in addition to, or instead of, that offered by hardware
handshaking. There are five options.
If Software Handshaking and Hardware Handshaking are both enabled, Hardware Handshaking takes
precedence.
None
When this option is selected, data is transmitted immediately.
*None
ACK/NAK
When this option is selected, after transmitting data, the scanner expects either an ACK or NAK response from the
host. When the scanner receives a NAK, it re-transmits the data and waits for either an ACK or NAK. After three
unsuccessful attempts to send data, the scanner issues an error indication and discards the data.
The scanner waits up to the programmable Host Serial Response Time-out to receive an ACK or NAK. If the
scanner does not get a response in this time, it issues an error indication and discards th e data. There are no
retries when a time-out occurs.
ACK/NAK
ENQ
When this option is selected, the scanner waits for an ENQ character from the host before transmitting data. If the
scanner does not receive an ENQ within the Host Serial Response Time-out, it 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