Mitsubishi MELSEC QS Series Programming Manual page 217

Number Name Meaning
SD16
SD17
SD18
SD19
SD20
SD21
Error
Error individual
individual
information
information
SD22
SD23
SD24
SD25
SD26
TableApp.3.2 Special register
Explanation
• Individual information corresponding to error codes (SD0) is
stored here.
• There are the following nine different types of information are
stored.
2) File name/Drive name
Meaning
Number
SD16 Drive
SD17
SD18 File name
SD19 (ASCII code: 8 characters)
SD20
2E (.)
SD21 3
Extension H
SD22 (ASCII code: 3 characters)
SD23
SD24
(Empty)
SD25
SD26
3) Time (value Actually measured)
Number Meaning
SD16 Time : 1 s units (0 to 999 s)
SD17 Time : 1ms units (0 to 65535ms)
SD18
SD19
SD20
SD21
(Empty)
SD22
SD23
SD24
SD25
SD26
4) Program error location
Number Meaning
SD16
SD17
File name
SD18
(ASCII code: 8 characters)
SD19
Extension 3 2E
SD20 H
SD21 (ASCII code: 3 characters)
SD22
(Empty)
SD23 Block No. 6
SD24
Step No. 6
SD25 Sequence step No. (L)
Sequence step No. (H)
SD26
*6: "0" is stored to the block number and the step number.
5) Parameter No. 6) Annunciator number
Number Meaning Number
SD16 SD16
Parameter No.
SD17 SD17
SD18 SD18
SD19 SD19
SD20 SD20
SD21 SD21
(Empty)
SD22 SD22
SD23 SD23
SD24 SD24
SD25 SD25
SD26 SD26
9) Error information
Meaning
Number
SD16 Error information 1
SD17 Error information 2
SD18 Error information 3
SD19 Error information 4
SD20 Error information 5
SD21 Error information 6
SD22 Error information 7
SD23 Error information 8
Error information 9
SD24
SD25 Error information 10
SD26 Error information 11
Appendix 3 SPECIAL REGISTER LIST
Set by
(When set)
(Example) File name =
MAIN.QPG
b15 to b8 b7 to b0
41 (A) 40 (M)
H H
43 (N) 49 (I)
H H
20 (SP) 20 (SP)
H x
20 (SP) 20 (SP)
H H
51 (Q) 2E (.)
H H
47 (G) 50 (P)
H H
S (Error)
(.)
Meaning
No.
(Empty)
Corresponding
CPU
QS
App-19