Intermec IF2 Basic Reader Interface Programmer's Reference Manual (BRI version - Page 67
Command Shortcut, Syntax, Parameters, Understanding the [LITERAL] Parameter
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Chapter 4 - BRI Commands attribute is enabled. The duration of the read is determined by the attribute settings. • In Continuous mode, the reader continuously collects tags and stores the tags in an internal tag list. If the tag list gets full, the oldest tag in the list is removed. Singleshot mode is enabled by default. To enter continuous mode, you have to use the REPORT parameter. Command Shortcut: Syntax: Parameters: R or RD READ[flex_query_selector][data_field|literal]* [ TAGTYPE=] [WHERE] [PASSWORD=] [REPORT=EVENT|NO|EVENTALL] [STOP|POLL] [flex_query_selector] = This parameter modifies the command for certain types of EPCC1G2 tags. For details, see "FLEXQUERY" on page 47. [data_field] = This parameter can be any data type defined in "Data Field Definitions" on page 22. For details, see "Understanding [READ FIELD] and [WRITE FIELD] Parameters" on page 85. If the READ command does not contain a [READ FIELD], the BRI uses a default based on the tag type: • For ISO 18000-6B tags, TAGID is used as the default. • For all other tags, EPCID is used as the default. [literal] = This parameter can be any text string surrounded by double quotes. The text string will be printed in the command response at the same point as it appeared in the command string, which lets you improve the readability of the data returned from the BRI. There is no limit to the number of [literals] you can include in a command. For details, see "Understanding the [LITERAL] Parameter" on page 103. [TAGTYPE] = This parameter represents the type of tag that is written. [WHERE] = This parameter can be any expression defined in "Data Conditions" on page 28. [PASSWORD] = This specific keyword is used to specify a password to access the data fields that are locked. [REPORT=value] = This reserved keyword determines if you are in Singleshot or Continuous mode: • REPORT=DIRECT enables Singleshot. This value is equivalent to excluding a REPORT parameter. Basic Reader Interface Programmer Reference Manual 55