251
Cycle Time/High-speed Processing Section 6-1
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.
Setting Method
Use the CX-Programmer to set shared index and data registers. This setting
cannot be made from a Programming Console.
1,2,3... 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.
Auxiliary Area Flags and Words
Name Address Description
IR/DR Opera-
tion between
Tas ks
A09914 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
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