Omron CJ - PROGRAMMING MANUAL 12-2009 Programming Manual page 322

Cycle Time/High-speed Processing
Note
Setting Method
1,2,3...
Auxiliary Area Flags and Words
282
Note The CS1G/H-CPU@@ (-V1) and CJ1@-CPU@@ CPU Units do not support
this function.
1. Shared Index and Data Registers can be used to eliminate the need to
store and load register contents between tasks when the same contents is
needed in two or more tasks. Refer to the section on index registers in the
CS Series Operation Manual (W339) or the CJ Series Operation Manual
(W393) for information on storing and loading index register contents.
2. The switching time between tasks will be somewhat faster when index and
data registers are shared. It is recommended to set shared registers if the
registers are not being used or if there is no particular need for separate
registers in each task.
Use the CX-Programmer to set shared index and data registers. This setting
cannot be made from a Programming Console.
1. Select a PLC (PLC) in the CX-Programmer project tree and click the right
mouse button.
2. Select Properties. The following dialog box will be displayed.
3. Leave the checkmark for using IR/DR independently per task if separate
index and data registers are required for each task. Remove the check-
mark to use shared index and data registers for all tasks.
Name Address
IR/DR Opera- A09914
tion between
Tasks
Description
Indicates whether or not index and data registers are
shared between tasks.
0: Separate registers for each task (default)
1: Shared registers for all tasks
Section 6-1