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Scan time
Factors that increase scan
time
• Writing data during RUN
• Time reserved for
communication processing
• Writing data during RUN
• Time reserved for communication
processing
• Refresh processing among CPU
modules in the multiple CPU
system
• Waiting time
Page 192,
Appendix 4
Parameter
Parameters added for a
multiple CPU system
Not supported
• Number of CPU modules
("Multiple CPU Setting")
• Control PLC setting ("I/O
Assignment")
• Out-of-group I/O setting ("Multiple
CPU Setting")
• Operation mode when a stop
error has occurred in a CPU
module ("Multiple CPU Setting")
• Communication area setting
("Refresh Setting")
• Settings of some parameters
must be the same for all the CPU
modules while others can be set
individually for each CPU module.
Page 80,
Section 4.2.2,
Page 170,
Appendix 1
Precaution AnS/A series module Supported
Supported only when a High
Performance model QCPU is set as
a control CPU.
Page 188,
Appendix 3
Item Single CPU system Multiple CPU system Reference