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CHAPTER 4 STARTING UP MULTIPLE CPU SYSTEM
4
4.2 Operation Settings
4.2 Operation Settings
This section describes the settings required to operate a multiple CPU system. A system where three Universal model
QCPUs are mounted shall be used as an example.
(1) Parameters required
(a) Basic model QCPU, High Performance model QCPU, and Process CPU
Settings of parameters in double-lined squares, except some parameters, must be the same in all the CPU
modules used in a multiple CPU system. ( Page 172, Appendix 1.1)
*1 For Basic model QCPUs, the online module change setting is not available.
High Performance model QCPUs do not support the online change function, but the setting is required to replace
modules controlled by the Process CPU on the same base unit online.
No. of PLC
Online Module Change
Detailed Setting: Control PLC
: Setting required
: Same setting required for all CPU modules
Multiple CPU Setting
Operation Mode
*1
I/O Sharing When Using Multiple CPUs
Change Screens
CPU Specific Send Range
PLC Side Device
Refresh Setting
I/O Assignment I/O Assignment
Basic Setting Slots
PLC System Points Occupied by Empty Slot
: Individual setting allowed for each CPU module