4 - 18 Symbol PL4507 Decoder Integration Guide
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[Code Type] is the desired symbology's parameter number (see
). For single-byte
parameter numbers, extend the value to two bytes by adding 00 before the parameter number.
Notes
When defining multicode expressions consider the following:
•
Use the Code Type specifier if there are bar codes of more than one code type in view.
•
Always use the Region specifier when there are multiple bar codes of the same code type.
•
When transmission order is important (the first element in the expression transmits first), use either type to
define the order.
•
When there are unwanted bar codes in view, filter them out in one of two ways:
•
Use Code Type to specify only the target bar codes.
•
Use Region to identify only the target bar codes.
•
If the expression does not contain a Region specifier, scanning angle and distance do not matter. If you
specify a region you must scan in a fixed orientation and at a fixed distance. Because of this, it is preferable
to use the Code Type specifier rather than the Region specifier.
•
When defining regions:
•
Defining a region much larger than the bar code improves tolerance to scan distance and angle, but can
cause a decode of a nearby bar code instead of the target bar code. Therefore, for best performance
define larger regions when only a few bar codes are in view and those in view are widely separated.
•
Defining a region close to (or smaller than) the target bar code improves the probability of decoding this
bar code rather than one nearby, but scan distance and angle must be more accurate. Therefore, for best
performance define small regions when many bar codes are in view or those in view are close together.
•
Use Region elements to improve decode speeds by reducing the image area to search for the target bar
code.
•
Specifying Code Type may also improve decode speeds for some code types.
•
Although you can scan parameter bar codes when multicode mode is enabled, be aware of the following: If
the multicode expression defined a region(s), to scan a parameter bar code you must position the bar code
within the first region defined in the expression. In some cases, this first region is not the center of the image
and aiming at the parameter bar code does not result in a successful decode.
The following examples show the multicode expressions in both hex and decimal formats, however in the sample
figures the values are decimal. Be sure to use the correct base numbering system when creating an expression. A
region specified as 0x00 0x00 0x64 0x32 represents a region with coordinates of Top-Left (0,0) and Bottom Right
(100,50).
Summary of Contents for Symbol PL4507
Page 1: ...Symbol PL4507 Decoder Integration Guide ...
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Page 3: ...Symbol PL4507 Decoder Integration Guide 72E 116649 02 Revision A April 2009 ...
Page 6: ...iv Symbol PL4500 Decoder Integration Guide ...
Page 16: ...xiv Symbol PL4507 Decoder Integration Guide ...
Page 20: ...xviii Symbol PL4507 Decoder Integration Guide ...
Page 40: ...2 12 Symbol PL4507 Decoder Integration Guide ...
Page 43: ...Accessories 3 3 Figure 3 2 Symbol SE4500 to PL4507 21 Pin Flex p n 15 113896 01 ...
Page 45: ...Accessories 3 5 Figure 3 4 Symbol PL4507 30 Pin Mating Host Connector p n 50 12167 030 ...
Page 70: ...4 24 Symbol PL4507 Decoder Integration Guide ...
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Page 264: ...10 8 Symbol PL4507 Decoder Integration Guide ...
Page 289: ...Advanced Data Formatting 11 25 Numeric Keypad continued 7 8 9 Cancel ...
Page 334: ...11 70 Symbol PL4507 Decoder Integration Guide Send ALT Characters continued Send Alt Send Alt ...
Page 355: ...Advanced Data Formatting 11 91 Alphanumeric Keyboard Space Single Close Quote Dash ...
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Page 358: ...11 94 Symbol PL4507 Decoder Integration Guide Alphanumeric Keyboard continued _ Underscore ...
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Page 361: ...Advanced Data Formatting 11 97 Alphanumeric Keyboard continued D E F G H I J ...
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Page 363: ...Advanced Data Formatting 11 99 Alphanumeric Keyboard continued R S T U V W X ...
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Page 380: ...A 12 Symbol PL4507 Decoder Integration Guide ...
Page 389: ...Sample Bar Codes C 3 Data Matrix Maxicode ...
Page 390: ...C 4 Symbol PL4507 Decoder Integration Guide ...
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Page 414: ...Glossary 8 Symbol PL4507 Decoder Integration Guide ...
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