Mitsubishi Electric MELSEC iQ-R-R00CPU, User Manual

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6 RAS FUNCTIONS
6.2 Self-Diagnostics Function
CPU module operation upon error detection setting
Configure each CPU module operation setting when an error is detected.
Mode when an error is detected
If the self-diagnostic function of the CPU module detects an error, the CPU module can be in one of the following operation
status:
■
Mode for stopping the operation of CPU module
Operation stops when an error has been detected. During stopping the operation may vary depending on the output mode
setting when module parameter error occurs.
• When "Clear" is set: Output for the corresponding module is turned off.
• When "Hold" is set: Output for the corresponding module is held.
For the setting method of module parameter, refer to the manual for each module.
■
Mode for continuing the operation of CPU module
If an error has been detected, the program other than programs (instruction) where an error was generated is executed.
Error detection setting
Set whether or not to detect errors.
[CPU Parameter]  [RAS Setting]  [Error Detection Setting]
Window
Displayed items
*1 When "Not Detected" is set and an operating module is removed, a module verification error is not detected, but a stop error may occur
if a program tries to access the removed module. The removed module will not be accessible even when it is re-installed. Therefore, if
an access to the re-installed module occurs by switching the operating status of the CPU module from STOP to RUN.
*2 When "Not Detected" is set, values are stored in the special relay and special register (SM150 to SM154/SD150 to SD154) that indicate
the status of the redundant power supply module.
*3 When a battery is installed, change the setting to "Detect". Otherwise, the installation status and replacement period of the battery
cannot be checked because the battery error cannot be detected.
Item Description Setting range Default
Battery Error Sets whether or not to detect the battery error. • Detect
• Not Detected • R00CPU, R01CPU,
and R02CPU: Not
Detected
*3
• Other CPU modules:
Detect
Module Verification Error
*1
Sets whether or not to detect a module verification error. Detect
Fuse Blown Sets whether or not to detect a fuse blown of the controlled
module.
Redundant Power Supply System Error
*2
Sets whether or not to detect a power supply module error
(power off or power supply failure in either system) in the
redundant power supply system.
Synchronous
Interrupt Program
(I44, I45) Executing
Time Excessive Execution Interval
Excess (I44, I45) Sets whether or not to detect the excessive execution time of
synchronous interrupt program (I44, I45). Not Detected
Program Execution
Section Excess (I45) Sets whether or not to detect the program execution section
excess errors of synchronous interrupt program (I45).