TransCore MPRX, Системное руководство

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System Guide
TransCore Proprietary 5–2
Chapter 5 General Software Information
This chapter provides software-related information for the Multiprotocol
Reader Extreme (MPRX) System.
This chapter presents various software-related topics arranged in alphabetical order by
subject. In addition to this chapter, refer to
“Chapter 6 Communications Protocols” on
page 6–2 and “Chapter 7 Commands” on page 7–2 ,” for more information.
Command Entry Conventions
All MPRX commands are preceded by the start-of-message character (#). The end-of-
message sequence expected from the host is a carriage return (CR). The MPRX 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> i
s 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.
5
Indicates the setting. Normally this is a variable and is usually a
hexadecimal value from 0 through F. In this example, 5 sets the
baud rate to 9600, the factory setting. In some commands, this
digit may be a four-place hexadecimal string or a character string.