Microscan MS-890 User Manual page 288

Bar Code Configuration
Using Configuration Symbols
Once in Bar Code Configuration mode, serial command data encoded in Code 128 symbols
is decoded by the scanner as serial input.
Configuration symbols must meet the following conditions:
1. The only valid symbology for Bar Code Configuration is Code 128.
2. Symbol data may contain more than one command, but individual symbols must be
presented individually. This is because only the first symbol in a read cycle will be
used as a possible configuration symbol. A symbol that is presented to the scanner
must be read 25 times consecutively to be used as a valid symbol.
Once this is done, the scanner will interpret the symbol data in the same fashion as
it interprets serial data.
3. Any valid command may be encoded in Code 128 symbols, including operational
commands.
Because the data is treated like serial input, multiple symbols may be used to represent
one command as long as the symbols are presented individually and in the correct order.
4. Read Rate commands may also be used to enter Read Rate from Bar Code Configuration
mode.
5. When in Read Rate, the scanner will read the symbologies that were enabled prior to
entering Bar Code Configuration mode. However, the scanner will read a
128 regardless of the current enable/disable state of Code 128.
Once the <J>
Bar Code Configuration mode. To exit Read Rate and remain in Bar
Code Configuration mode, present the start symbol once again.
Symbols decoded during Read Rate will not configure the scanner.
Scan the symbol shown to the right to start a Read Rate test.
Exiting Bar Code Configuration
There are multiple ways of exiting Bar Code Configuration.
The first way is simply to decode a symbol encoded with the
<J> command from a terminal. The scanner will beep when exiting Bar Code Configuration
in response to a <J>
Any command that executes a software reset will also end Bar Code Configuration mode.
These commands include the Save family as well as the Reset family (<Z>, <Zc>, <A>,
<Arc>).
To end the Read Rate test and Bar Code Configuration mode, scan this symbol:
Configuration changes will remain in effect, as would changes made by using serial
commands or ESP.
A-24
is issued, the scanner will exit both Read Rate and
command.
<J>
MS-890 Industrial Automation Scanner User Manual
<J> in Code
command, or to enter a