Rockwell Automation 2706-M1 MESSAGEVIEW 421 HARDWARE MANUAL - Manual (Page 121)

Glossary G–1
Publication 2706-816 – November 1996
Glossary
Note: A word or words in bold face in an entry has its own entry in
this Glossary.
A –
Address – See Node Address.
Application – A logical arrangement of messages, tags, and
configuration Parameters for a specific type of MessageView
terminal in a system with a specific type of Controller. When it is
downloaded into a MessageView terminal, it allows the terminal
operator to monitor and control a process.
ASCII Input Device – A bar code scanner or other device that
sends alphanumeric data to a MessageView terminal. A terminal
with two ports and Firmware that supports ASCII Input may have
its RS-232 port connected to an ASCII Input device.
ASCII Triggering Device – A device that can trigger messages in a
MessageView terminal with Firmware that supports ASCII
Triggering. It reads and writes data through the terminal’s RS-232
port.
Auxiliary Device – A device connected to the RS-232 port of a
MessageView terminal that is being controlled through its Remote
I/O port by a Logic Controller. An auxiliary device may be an
ASCII Input device such as an AdaptaScan reader, or a Slave
Device such as a Dataliner DL50.
B –
Background Message – A message that is displayed by a
MessageView terminal when no other message has been active for 2
seconds.
Baud – The rate at which data transmission occurs. One baud equals
one bit per second.
Boot Code – Software in a MessageView terminal that allows
Firmware and an Application to be loaded in the terminal. Its
revision number may be seen. The Boot Code is tested every time
the terminal is powered up, and may also be tested separately using
the Front Panel Editor.