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Parameter Menus
RS-232C Parameters
Software Handshaking
This 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 base expects either an
ACK or NAK response from the host. Whenever a NAK is received, the base
transmits the same data again and waits for either an ACK or NAK. After three
unsuccessful attempts to send data when NAKs are received, the base issues an
error indication and discards the data.
The base waits up to the programmable Host Serial Response Time-out to
receive an ACK or NAK. If the base does not get a response in this time, it issues
an error indication and discards the data. There are no retries when a time-out
occurs.
ACK/NAK
Summary of Contents for LS 4071
Page 1: ...LS 4071 Product Reference Guide...
Page 3: ...LS 4071 Product Reference Guide 70 19303 02 Revision A December 1999...
Page 8: ...vi Appendix A UCC EAN 128 A 2 AIM Code Identifiers A 4 Appendix B Glossary Index...
Page 14: ...xii LS 4071 Product Reference Guide...
Page 18: ...1 4 LS 4071 Product Reference Guide...
Page 26: ...2 8 LS 4071 Product Reference Guide...
Page 143: ...5 99 Parameter Menus Numeric Bar Codes Cont d 4 5 6 7...
Page 158: ...A 14 LS 4071 Product Reference Guide...