8 - 14 Symbol MS4404/MS4407 Integration Guide
Check Parity
Parameter # 97h
Select whether or not to check the parity of received characters. See
to select the type of parity.
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 decoder neither generates nor expects
ACK/NAK handshaking packets.
•
Enable ACK/NAK Handshaking
: If you select this option, after transmitting data, the decoder expects either
an ACK or NAK response from the host. The decoder also ACKs or NAKs messages from the host.
The decoder waits up to the programmable Host Serial Response Time-out to receive an ACK or NAK. If the
decoder 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.
*Do Not Check Parity
(00h)
Check Parity
(01h)
Disable ACK/NAK
(00h)
*Enable ACK/NAK
(01h)
Summary of Contents for Symbol MS4404
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Page 332: ...13 72 Symbol MS4404 MS4407 Integration Guide Send ALT Characters continued Send Alt Send Alt ...
Page 353: ...Advanced Data Formatting 13 93 Alphanumeric Keyboard Space Single Close Quote Dash ...
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