Check Parity; Software Handshaking - Motorola Symbol DS9808-R Manual

Check Parity

Parameter # 97h
Select whether or not to check the parity of received characters. Use the Parity parameter to select the type of
parity.
*
Check Parity
(01h)

Software Handshaking

Parameter # 9Fh
This parameter offers control of the data transmission process in addition to that offered by hardware handshaking.
Hardware handshaking is always enabled and cannot be disabled by the user.
• Disable ACK/NAK Handshaking: If you select this option, the digital scanner neither generates nor expects
ACK/NAK handshaking packets.
• Enable ACK/NAK Handshaking: If you select this option, after transmitting data, the digital scanner expects
either an ACK or NAK response from the host. The digital scanner also ACKs or NAKs messages from the
host.
The digital 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 resends its data up to two times before discarding
the data and declaring a transmit error.
Disable ACK/NAK
(00h)
SSI Interface
Do Not Check Parity
(00h)
*
Enable ACK/NAK
(01h)
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