Mitsubishi Electric MELSEC iQ-R Series User Manual page 279

Diagnostics information
The special registers for diagnostics information are as follows.
No. Name Description
SD0 Latest self- Latest self-
diagnostics error diagnostics error
code code
SD1 Self-diagnostics Self-diagnostics
error occurrence error occurrence
time time
SD2
SD3
SD4
SD5
SD6
SD7
SD10 Self-diagnostics Self-diagnostics
error code error code 1
SD11 Self-diagnostics
error code 2
SD12 Self-diagnostics
error code 3
SD13 Self-diagnostics
error code 4
SD14 Self-diagnostics
error code 5
SD15 Self-diagnostics
error code 6
SD16 Self-diagnostics
error code 7
SD17 Self-diagnostics
error code 8
SD18 Self-diagnostics
error code 9
SD19 Self-diagnostics
error code 10
SD20 Self-diagnostics
error code 11
SD21 Self-diagnostics
error code 12
SD22 Self-diagnostics
error code 13
SD23 Self-diagnostics
error code 14
SD24 Self-diagnostics
error code 15
SD25 Self-diagnostics
error code 16
SD53 AC/DC DOWN Number of times for
AC/DC DOWN
detection
SD60 Number of module Number of module
with blown fuse with blown fuse
SD61 I/O module verify I/O module verify
error module error module
number number
Details
Error codes are stored in hexadecimal when an error is detected with the
diagnostics.
• The same information as the latest information displayed on the error
history is displayed.
The year (four digits) when SD0 data was updated is stored as a BIN
code.
The month when SD0 data was updated is stored as a BIN code.
The date when SD0 data was updated is stored as a BIN code.
The hour when SD0 data was updated is stored as a BIN code.
The minute when SD0 data was updated is stored as a BIN code.
The second when SD0 data was updated is stored as a BIN code.
The day of the week 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)
Up to 16 types of error codes are stored to SD10 and higher when the
diagnostics detects errors. (The same error code as the one already
stored in SD10 and later is not stored.) The 17th and succeeding error
codes are not stored, in addition to the case that 16 types of error codes
have already been stored to SD10 to SD25.
A value is incremented by one each time when input voltage drops to 85%
(AC power)/65% (DC power) or less of the rated value while this product
is in operation, and stored as a BIN code.
A counting cycle from 0  65535  0 is repeated.
The lowest I/O number of module in which a fuse blew is stored.
The lowest I/O number of the module in which an I/O module verification
error has been detected is stored.
Set by (when to set)
S (error occurrence)
S (error occurrence)
S (error occurrence)
S (error occurrence)
S (error occurrence)
S (error occurrence)
APPX
Appendix 5 Special Register List
A
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