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3 - 6
Host Port Communications
Host ACK Selection
Some applications require that the host terminal (or server) approve or reject
incoming bar code data and notify the operator of these actions. These
applications require that the host maintain control over the response indicators
emitted from the source scanner. Turning the Host ACK selection on, configures
the cordless system scanners to respond to commands from the host system.
The following criteria must be met for the Host ACK to work correctly:
• The cordless system must be configured for “Host Port RS-232” (Terminal
ID = 050)
• Both the host terminal and the cordless system must have RTS/CTS
handshaking ("Hardware Flow Control Selection" on page 3-4) enabled.
• Host ACK must be enabled (page 3-7).
• System performance degrades when using Host ACK at rates lower than
9600.
• The host terminal software must be capable of interpreting the bar code
data, make decisions based on the data content, and send out appropriate
escape commands to the source scanner.
Escape commands are addressed to the source scanner via “Application Work
Groups.” Once a command is sent, all scanners in a group respond to that
command. Because of this situation,
it is recommended that each scanner is
assigned to its own group
.
The commands to which the scanner responds are listed on page 3-8 and
page 3-9. The <ESC> is a
1B hex
. A typical command string is
y <ESC> x,
where “y” is the application work group number, “<ESC> x” is the escape
command, and the comma is the terminator.
Up to twenty commands may be strung together to create custom response
sequences. An example of a command is listed below.
0<ESC>4<ESC>5<ESC>6,
The above example will make a scanner in application work group zero beep low
,
medium, high.
Once Host ACK is enabled, the system works as follows:
• The scanner reads a code and sends data to the base/host system. No
audible or visual indication is emitted, unless “Decode Beep” is enabled
(page 3-10). The scanner read indicator goes out upon a successful read.
• Scanner is suspended until 1) a valid escape string is received from the
host system (via the base) or 2) the scanner “times out.”
• Once condition 1 or 2 above has been met, the scanner is ready to scan
again, and the process repeats.
Содержание SCANTEAM 2070
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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...
Страница 130: ...5 28...
Страница 132: ...6 2 Codabar Default All Codabar Settings Codabar Start Stop Characters On Off Transmit Don t Transmit...
Страница 136: ...6 6 Code 39 Default All Code 39 Settings Code 39 Start Stop Characters On Off Transmit Don t Transmit...
Страница 141: ...6 11 Code 93 Default All Code 93 Settings Code 93 On Off...
Страница 143: ...6 13 Interleaved 2 of 5 Default All Interleaved 2 of 5 Settings Interleaved 2 of 5 On Off...
Страница 146: ...6 16 Code 2 of 5 Default All Code 2 of 5 Settings Code 2 of 5 On Off...
Страница 148: ...6 18 Matrix 2 of 5 Default All Matrix 2 of 5 Settings Matrix 2 of 5 On Off...
Страница 150: ...6 20 Code 11 Default All Code 11 Settings Code 11 Code 11 Check Digits Required On Off 2 Check Digits 1 Check Digit...
Страница 152: ...6 22 Code 128 Default All Code 128 Settings Code 128 On Off...
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...
Страница 177: ...6 47 UPC Addenda Two Digit Addenda On Two Digit Addenda Off Five Digit Addenda On Five Digit Addenda Off...
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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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Страница 231: ...Programming Chart A C Save B Discard Current Changes F E D...
Страница 232: ...3870 75 5770 SM Rev C...