readStopTimeout is a configuration parameter to specify the timeout period in milliseconds that the profile will wait to receive an acknowledgment from the reader after commanding the reader to stop reading.
The "TagReadingExpression" is an Lightweight Directory Access Protocol (LDAP) expression to trigger the state of tag reading based on input pin and control values.
tagReadingSubCycleLength is a configuration parameter to specify the period length in milliseconds for each sub cycle, for "auto" mode, it is the timeout value.
tagReadingSubCycleNum is a configuration parameter to specify the number of the sub cycles in each reading cycle, it is only applicable when "tagReadingSubCycleMode" is not "null".