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MELSEC-Q
11 TROUBLESHOOTING
Special Register List (Continued)
Number Name Meaning Explanation
Set by
(When
set)
Corresponding
ACPU
D9
Corresponding
CPU
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
• Individual information corresponding to error codes (SD0) is stored
here.
• There are the following six different types of stored information.
1
File name/Drive name
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
Drive
2E
H
(.)
File name
(ASCII code: 8 characters)
(Vacant)
42
H
(B) 41
H
(A)
44
H
(D) 43
H
(C)
46
H
(F) 45
H
(E)
48
H
(H) 47
H
(G)
49
H
(I) 2E
H
(.)
4B
H
(K) 4A
H
(J)
B15 to B8 B7 to B0
(Example)
File name=
ABCDEFGH. IJK
Extension
(ASCII code: 3 characters)
2
Time (value actually measured)
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
Time : 1
µ
s units (0 to 999
µ
s)
(Vacant)
Time : 1 ms units (0 to 65535 ms)
3
Program error location
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
2E
H
(.)
File name
(ASCII code: 8 characters)
Extension
(ASCII code: 3 characters)
Pattern
Block No.
Step No./transition No.
Sequence step No. (L)
Sequence step No. (H)
Contents of pattern data
SFC block designation present
(1)/absent (0)
0000 to
0123415 14 to
SFC step designation present
(1)/absent (0)
SFC transition designation
present (1)/absent (0)
(Not used)
(Bit number)
SD24
4
Parameter number
5
Annunciator
number / CHK
instruction
malfunction
number
6
Intelligent function
module parameter
error
(for QCPU only)
SD25
SD26
Error individual
information
Error
individual
information
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
No.
(Vacant)
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
Parameter No.
(Vacant)
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Meaning
(Vacant)
Parameter No.
Error code for intelligent
function module
6 6
6 For details of the parameter numbers, refer to the user's
manual of the CPU module used.
S (Error) New
+Rem