Cpu Module Operation Upon Error Detection Setting - Mitsubishi Electric MELSEC iQ-R Series User Manual

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
Item
Battery Error
*1
Module Verification Error
Fuse Blown
Redundant Power Supply System Error
Synchronous Interrupt Execution Interval
Program (I44, I45) Excess (I44, I45)
Executing Time
Program Execution
Excessive
Section Excess (I45)
*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 The power supply module on the extension base unit for the redundant system also becomes a target for the setting.
Description
Sets whether or not to detect the battery error.
Sets whether or not to detect a module verification
error.
Sets whether or not to detect a fuse blown of the
controlled module.
*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.
Sets whether or not to detect the excessive execution
time of synchronous interrupt program (I44, I45).
Sets whether or not to detect the program execution
section excess errors of synchronous interrupt program
(I45).
Setting range Default
• Detect Detect
• Not Detected
Detect
*3
Not Detected
15 RAS FUNCTIONS
15.2 Self-Diagnostics Function
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