Safety Diagnostic Function; Safety Data Identify Check - Mitsubishi Electric MELSEC iQ-R-R00CPU User Manual

37.9

Safety Diagnostic Function

The following table lists the safety-specific diagnostic functions among the self-diagnostic functions for the SIL2 Process CPU.
*1
Item
Memory diagnosis RAM diagnosis
F/W diagnosis
Program diagnosis Operation circuit
diagnosis
File verification
Operation result Output data
verification verification
System diagnosis Time monitoring
Microcomputer
diagnosis
Power supply Power supply voltage
voltage monitoring monitoring
Power supply voltage
monitoring/shutdown
circuit diagnosis
Reset circuit Reset circuit
monitoring monitoring diagnosis
Clock stop Clock diagnosis
detection
CRC calculation CRC calculation
circuit diagnosis circuit diagnosis
Module Module OS diagnosis
*1 Self-diagnostics is performed in both the SIL2 Process CPU and SIL2 function module.
37.10

Safety Data Identify Check

This function checks if the project data created using the engineering tool and the data in the SIL2 Process CPU are the
same, and confirms that the program executed in SAFETY MODE is the one written by the user.
This function allows the user to inspect whether the files in the engineering tool and the SIL2 Process CPU match or not.
[Online]  [Safety PLC Operation]  [Check Safety Data Identity]
For details, refer to the following.
 GX Works3 Operating Manual
37 FUNCTIONS
658
37.9 Safety Diagnostic Function
Description
Detects errors occurring at program memory,
device memory, and memory used by the system.
Diagnoses whether the firmware stored in the
ROM is corrupt.
Detects errors at operation circuits used to
operate safety programs.
Detects errors in stored safety programs and
safety parameters.
Diagnoses whether safety programs and safety
parameters stored in both the SIL2 Process CPU
and SIL2 function module are the same.
Verifies output results calculated in the respective
SIL2 Process CPU and SIL2 function module.
Monitors the execution status of the respective
SIL2 Process CPU and SIL2 function module
processing.
Detects microcomputer internal register errors.
Detects voltage errors to prevent operation with
voltage outside the guaranteed operating range.
Monitors whether the circuit monitoring the power
supply voltage and circuit used to perform
shutdown are functioning properly.
Diagnoses whether the reset has been performed
correctly.
Detects clock errors (frequency errors).
Diagnoses whether the CRC calculation circuit is
capable of correctly calculating CRC.
Verifies whether the SIL2 Process CPU and SIL2
function module are functioning normally without
running out of control.
Diagnostic timing Error code
• At powering off and on 3C20H, 3C21H, 3C22H,
• At reset 3C2FH, 3C33H
• At END processing
• At powering off and on 3C10H
• At reset
• At powering off and on 3C15H
• At reset
• At END processing
• At powering off and on 2180H, 36E1H, 3C33H,
• At reset 3C34H
• At END processing
• At powering off and on 2180H, 3640H
• At reset
At safety cycle processing 3E60H
Always 3E61H
• At powering off and on 3C00H, 3C01H
• At reset
• At END processing
Always 
(Performs a shutdown.)
• At powering off and on 3E10H, 3E11H
• At reset
• At END processing
• At powering off and on 3E12H
• At reset
• At powering off and on 3C16H
• At reset
• At END processing
• At powering off and on 3E01H
• At reset
• At END processing
• At powering off and on 3C11H, 3C17H
• At reset
• At END processing