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16 MULTIPLE CPU SYSTEM FUNCTION
16.3 Multiple CPU Parameter Checking
16.3
Multiple CPU Parameter Checking
Whether the same setting is configured for between the system parameter of each CPU module and multiple CPU refresh
number of points of CPU parameter is checked by the multiple CPU system at the timing shown below. However, as for the
fixed scan communication setting and inter-module synchronization setting, checking is done only for the module using the
functions.
• At power-on
• At reset of the CPU No.1
• At operating status change (STOP to RUN) after parameter change
Ex.
An error occurs in the module of each CPU No 2 and 3, and the module of each CPU No 1 and 4 starts up normally when
parameter checking. (Operation in error)
: there is setting (if the number immediately next is the same number, it refers to the same parameter) ,
: there is no
setting
Timing
Parameters to check
Checking conditions for CPU
No.1
Checking conditions for CPU
No.2 and over
At power-on or reset of the CPU No.1
System parameters (other than fixed
scan communication setting and
inter-module synchronous setting)
Checking is not conducted.
Compares with the parameters of the
CPU of the lowest number.
Settings of fixed scan communication
Checking is not conducted by the CPU module of the number for which the
fixed scan communication setting is not configured. The CPU module of the
number for which the fixed scan communication setting is configured will
compare the parameters with those of the CPU of the lowest number.
Inter-module synchronization setting
Checking is not conducted by the CPU module of the number for which the
Inter-module synchronization setting is not configured. The CPU module of
the number for which the Inter-module synchronization setting is configured
will compare the parameters with those of the CPU of the lowest number.
CPU parameters (number of points of
refresh settings)
Checking is not conducted by the CPU module of the number for which the
fixed scan communication setting is not configured. The CPU module of the
number for which the fixed scan communication setting is configured will
compare the parameters with those of the CPU of the lowest number.
At operating status change (STOP to
RUN) after parameter change
Compares with the parameters of the host CPU module before parameters
are changed.
Item
Setting conditions for the CPUs of each number
PLC No. 1
PLC No. 2
PLC No. 3
PLC No. 4
With or without the setting for
each parameter
System parameters (other than fixed scan communication
setting and inter-module synchronous setting)
*1
1
5
1
1
Settings of fixed scan communication
*2
2
2
6
Inter-module synchronization setting
*3
3
3
CPU parameters (number of points of refresh settings)
*4
4
4
*1
*3
*2
*4
*3
*4
*1
*2
*1
*2
*1
CPU No.1
System parameter
CPU parameter
CPU No.2
System parameter
CPU parameter
CPU No.3
System parameter
CPU parameter
CPU No.4
System parameter
CPU parameter
Check
Check
Check
Check
A verification
mismatch occurs.
A verification
mismatch occurs.
Summary of Contents for MELSEC iQ-R-R00CPU
Page 2: ......
Page 151: ...9 MONITOR FUNCTION 9 1 Real Time Monitor Function 149 9 MEMO ...
Page 323: ...18 SEQUENCE SCAN SYNCHRONIZATION SAMPLING FUNCTION 321 18 MEMO ...
Page 330: ...328 20 ROUTING SETTING 20 3 Precautions MEMO ...
Page 423: ...26 BASIC CONCEPT 26 8 State Transition of the Redundant System 421 26 MEMO ...
Page 1014: ...1012 APPX Appendix 15 Added and Enhanced Functions MEMO ...
Page 1027: ......