Rockwell Automation 2706-MB1 MESSAGEVIEW 421 SOFTWARE MANUAL - Manual (Page 79)

4–31 Planning an Application
Publication 2706-817
Create tags in the Tag Editor to link message triggers and message
variables with specific controller addresses. A tag specifies the
address and data type, whether a value should be written to that
address or read from it, and other information. Chapter 8 shows how
tags are used in MessageBuilder applications.
Message triggers and each embedded variable in a message must be
linked to a controller data table. The MessageView terminal either
reads the data for a message trigger or a display variable, or writes
data for an entry variable.
MessageView Display
PLC/SLC Data Tables
Input Table
Output Table
Integer Table
Counters, Timers,
Status, Control, etc.
Message with
Entry Variable
Discrete I/O
Message with
Display Variable
Discrete I/O
Message with
Display Variable
Block Transfer
Tags