Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual page 934

*1 The standby system scan time is the total of "Execution time of the standby system program after a system switching cause is received
+ Tracking data reflection time".
*2 When the CC-Link IE Field Network module has not been mounted, the systems may not be switched depending on the state of the
power supply module failure. To switch the systems regardless of the state of the power supply module failure, mount the CC-Link IE
Field Network module. Note, in this case, that Trd is determined by the following:
Trd = 400ms (maximum) + Standby system scan time
*3 When the CC-Link IE Field Network module has not been mounted and a communication error has been detected in the
communications between the redundant function module and the CPU module, the systems may not be switched. To switch the systems
even though the redundant function module has been removed from the base unit or a failure has occurred in the base unit, mount the
CC-Link IE Field Network module. Note, in this case, that Trd is determined by the following:
Trd = Standby system scan time
*4 When a system switching occurs due to a stop error of the CPU module, only the system data is transferred and the other data (such as
the signal flow memory, devices and labels) are not transferred.
■Tracking data reflection time
The following describes the time required for the CPU module of the standby system to reflect tracking data. The calculation
method differs depending on whether an extended SRAM cassette is inserted or not.
CPU module
Process CPU (redundant mode)
SIL2 Process CPU
• D1: Size [word] of tracking data in the system data, signal flow memory, and refresh data register (RD)
• D2: Size [word] of tracking data of global devices, local devices, global labels, and local labels
• D4: Size [word] of tracking data in the system data, signal flow memory (standard/safety), and refresh data register (RD)
• D5: Size [word] of tracking data of global devices (standard/safety), local devices (standard/safety), global labels (standard/
safety), local labels (standard/safety), and standard/safety shared labels
• D7: Total size [word] of tracking data in the system data (safety), signal flow memory (safety), local devices (safety), global
labels (safety), local labels (safety), global devices (safety), and standard/safety shared labels
• F1: Number of transferred blocks
For the calculation formula for D1 to D7, refer to the following.
Page 927 Tracking data send time
Extended time from completion of a system switching to the first output
The following describes the time required for the CPU module that has started operating as the new control system to output
values to the network module for the first time.
■Standard control
Tjo = Sc - Twc - Ts - Toref [ms]
• Tjo: Extended time from completion of a system switching to the first output
• Sc: Scan time of the CPU module in the control system
• Twc: Constant scan waiting time
• Ts: Increase in the scan time of the CPU module in the control system
• Toref: Output refresh of the intelligent function module (CPU module  Intelligent function module)
APPX
932
Appendix 9 Processing Time
Extended SRAM Tracking data reflection time
cassette inserting
status
1+ (20.0  10
Not inserted
1+ (20.0  10
Inserted
1+ (20.0  10
Not inserted
1+ (20.0  10
Inserted
-6 -6
)  D1 + (37.2  10 )  D2 + (300.0  10
-6 -6
)  D1 + (106.0  10 )  D2 + (300.0  10
-6 -6
)  D4 + (37.2  10 )  D5 + (682.3  10
-6 -6
)  D4 + (106.0  10 )  D5 + (682.3  10
-6
)  F1[ms]
-6
)  F1[ms]
-6 -6
)  D7 + (300.0  10 )  F1[ms]
-6 -6
)  D7 + (300.0  10 )  F1[ms]