Rockwell Automation DeviceLogix System User Manual - Manual (Page 158)

158 Publication RA-UM003B-EN-P - February 2010
Chapter 7 Create Logic in the New Ladder Editor
Interface Changes Related to Macro Instruction
Three areas of the new Ladder Editor interface behave differently with
Macro instructions than with standard instructions:
• Instruction toolbar
• Tag Database
• Edit menu
Instruction Toolbar and Tag Database
• When you create or edit a Macro definition, product scope I/O
and other Macro instructions are not available for use in the
definition.
• The I/O defined in the Input/Output tab are called Macro scope
I/O and are available for use in the Macro.
• Some standard instructions have individual limits for usage
within the ladder logic. For example, you can use only three
instances of a MAVE instruction, even if the device supports 100
instances. These limits also apply when you use these
instruction types in Macro definitions. Once you reach the usage
limit for a given instruction type, the instruction will be
grayed-out.
Edit Menu
When you add and edit Macro instructions, the information displayed
on the Add Ladder Element dialog box depends on what you are
editing.
• If you are editing a Macro definition, only Macro scope I/O are
listed. No product scope I/O are available for use in Macro
definitions.
• If you are editing the main ladder logic, the Macro instruction
types and their instances are listed, but Macro scope I/O are not.
Online Operations Edit Parameter Values When Online
When the device is online, you cannot edit the logic. However, you
can modify certain parameter values and apply them while the logic is
running, including the Timer's and Counter's Preset (PRE) and
Accumulator (ACC).