Rockwell Automation 2706-MB1 MESSAGEVIEW 421 SOFTWARE MANUAL - Manual (Page 148)

7–27 Creating Messages
Publication 2706-817
If the Read Tag is new, or its parameters need to be edited:
1. Put the insertion pointer in the Read Tag box.
2. Select the Edit Tag button to bring up the Tag Form dialog.
3. Edit the tag’s attributes (see the section starting on Page 8–2).
Note: Character Array size must be between 1 and 32.
4. Select OK.
Slave devices
Slave devices support the display of ASCII Display variables in
messages. They are updated while the slave message is actively
displayed.
ASCII Triggering devices
Tag Node Name and Address attributes are ignored by an ASCII
Triggering device. They may be omitted when creating applications
for use with such a device.
A Numeric Variable Entry allows the terminal operator to change or
enter a value stored at a controller address. It may be used for this
purpose in any application designed for a MessageView 421N or
421F terminal.
In addition, this variable may be used with an ASCII Input device
when the input is in numeric form. It may be used for this purpose in
an application designed for a terminal that has both a daughterboard
(Catalog No. 2706-M1D1, -M1N1 or -M1F1) and firmware that can
support ASCII Input.
To create the variable, set the insertion pointer in the Message Edit
box where the variable will be placed.
•
Click the Embedded Variable tool on the Message Edit toolbar
and select Numeric Variable Entry on the dialog.
•
Or select the Numeric Variable Entry command on the Format
menu.
Numeric Variable Entry