General Software Information
5-3
Chapter 5
General Software Information
This chapter provides software-related information for the Encompass
®
4
Reader System.
This chapter presents various software-related topics arranged in alphabetical order by
subject. In addition to this chapter, see Chapter
Chapter 6, “Communications Proto-
cols,” and Chapter 7, “Commands for more information.
Command Entry Conventions
All Encompass 4 Reader commands are preceded by the start-of-message character
(#). The end-of-message sequence expected from the host is a carriage return (CR).
The Encompass 4 Reader terminates messages with a return and a line-feed (CR/LF).
For example, the command #01 Switch To Command Mode is typed as follows:
#01<ENTER>
where <ENTER> is the Enter or Return key.
Some command characters may be represented by the letter N. This letter indicates
you are to supply a value. Maximum valid entries are the numbers 0 through 9 and the
uppercase letters A through F. These letters allow for as many as 16 available user
responses and are based on the hexadecimal numbering system.
Commands have at least two characters following the # character. Table 5-1 shows the
basic structure of a four-character command.
Table 5-1 Four-Character Command Structure
#1005 Set Baud Rate To 9600 Baud
# All commands are preceded by the # character.
1 Indicates the command group. This command is in Group 1-
Communications Port Control.
0 Indicates the command subgroup. In this example, all commands with
a second digit of 0 apply to the main port.
0 The command digit. In this example, the 0 indicates that this command
affects the baud rate.
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