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Auxiliary Port Input Communications
Protocol Selection
This selection programs the Auxiliary Port for the protocol required by the input
device to the Auxiliary Port. The protocol is a set of rules concerning the
exchange of data between serially communicating devices. The Auxiliary Port
supports Record, Burst, and ACK/NAK protocols when receiving data from an
RS-232 device.
When the Aux Port is being used as an input, data packets can be sent from the
peripheral to the Aux Port in two different forms (See "Data Character
Selection" on page 3-17).
• Record -- a single string of data that is to be sent to the host system.
• Block -- several strings of data that are to be appended together within the
base and sent to the host system as a single message.
The programmer should determine which of the four selections below best meets
the requirements of the peripheral.
• Record -- used when the transmitting peripheral is sending messages
when no confirmation of receipt is required.
• Record ACK/NAK -- same as Record, however the base responds to the
peripheral upon receipt of the message. The <ACK> (acknowledge)
character (ASCII 06 hex) is sent to the peripheral to acknowledge that a
<NAK> (non-acknowledge) character (ASCII 15 hex) is sent when the
message is not received correctly.
• Block ACK/NAK -- same as Record ACK/NAK, but the <ACK> or <NAK>
is issued upon completion of the block message.
• Burst -- used when XON/XOFF software flow control is required by the
transmitting peripheral.
*Record
Burst
Record ACK/NAK
Block ACK/NAK
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Страница 108: ...5 6 Initiate Key Macro IT3875 and ST2070 5 only FN 0 FN 1 FN 2 FN 3 FN 4 FN 5 FN 6 FN 7 FN 8 FN 9 Asterisk Macro...
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Страница 132: ...6 2 Codabar Default All Codabar Settings Codabar Start Stop Characters On Off Transmit Don t Transmit...
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Страница 155: ...6 25 Telepen Default All Telepen Settings Telepen On Off...
Страница 157: ...6 27 China Post Code IT3870 IT3875 only Default All China Post Code Settings China Post Code On Off...
Страница 161: ...6 31 PDF417 IT3870PDF IT3875PDF only Default All PDF417 Settings PDF417 On Off...
Страница 166: ...6 36 MicroPDF417 IT3870PDF IT3875PDF only Default All MicroPDF417 Settings MicroPDF417 On Off...
Страница 170: ...6 40 EAN JAN 8 Default All EAN JAN 8 Settings EAN JAN 8 EAN JAN8 Check Digit On Off Transmit Don t Transmit...
Страница 173: ...6 43 UPC A continued UPC A Check Digit Number System Transmit Don t Transmit Transmit Don t Transmit...
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Страница 199: ...9 11 Cordless Base Dimensions ST2070 Front View 1 4 in 3 6 cm Top View 4 5 in 11 5 cm 4 0 in 10 2 cm 3 4 View Side View...
Страница 217: ...11 5 Limited Warranty Durations IT3870 3875 ST5770 ST2070 CLESS NIMH S Charge Pack 3 Years 3 Years 3 Years 1 Year...
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