Diagnostic Information - Mitsubishi Electric MELSEC iQ-R Series User Manual

Diagnostic information

The following is the list of special register areas relating to the diagnostic information.
No. Name
SD0 Latest self
diagnostics error
code
SD1 Latest self-
diagnostics error
time
SD2
SD3
SD4
SD5
SD6
SD7
SD10 Self-diagnostic
error number
SD11
SD12
SD13
SD14
SD15
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD49 Error detection
invalidation
*1
setting
SD53 AC/DC DOWN
Data stored Details
Latest self diagnostics error Error codes are stored in a hexadecimal value when the diagnostics
code detects an error.
Latest self-diagnostics error The year value (four digits) of the date/time when SD0 data was
time updated is stored as a BIN code.
The month value of the date/time when SD0 data was updated is
stored as a BIN code.
The day value of the date/time when SD0 data was updated is
stored as a BIN code.
The hour value of the date/time when SD0 data was updated is
stored as a BIN code.
The minute value of the date/time when SD0 data was updated is
stored as a BIN code.
The second value of the date/time when SD0 data was updated is
stored as a BIN code.
The day of the week value of the date/time when SD0 data was
updated is stored as a BIN code. (0: Sun, 1: Mon, 2: Tue, 3: Wed, 4:
Thu, 5: Fri, 6: Sat)
Self-diagnostic error number 1 The maximum of 16 types of error codes are stored into SD10
onwards when the diagnostics detects an error (The same error
Self-diagnostic error number 2
code as one already stored in SD10 onwards is not stored). The
Self-diagnostic error number 3
17th error code onwards are not stored. Also error codes are not
stored when 16 types of error codes have already been stored into
Self-diagnostic error number 4
SD10 to SD25.
Self-diagnostic error number 5
Self-diagnostic error number 6
Self-diagnostic error number 7
Self-diagnostic error number 8
Self-diagnostic error number 9
Self-diagnostic error number 10
Self-diagnostic error number 11
Self-diagnostic error number 12
Self-diagnostic error number 13
Self-diagnostic error number 14
Self-diagnostic error number 15
Self-diagnostic error number 16
Error detection invalidation Specify a function for which detection of continuation errors is
setting invalidated. (On: Invalidate (do not detect an error), Off: Do not
invalidate (detect an error))
b0: Built-in Ethernet port communication error
The number of AC/DC DOWN The value of this register increments by one and stored as a BIN
detections code, each time input voltage drops to 85% (AC power)/65% (DC
power) or less of the nominal value while the CPU module is
carrying out an operation. A counting cycle from 0 to 65535 to 0 is
repeated. (In a redundant system with redundant extension base
unit, if a momentary power failure occurs in a module on an
extension base unit, counting will be performed in both systems.)
b0
Appendix 5 List of Special Register Areas
Set by
(setting
timing)
S (Error)
S (Error)
S (Error)
A
U
S (Error)
APPX
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