Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

Page: 675 / 2110

7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
673
7
Operation error
Precautions
When SM705 (Number of conversion digits selection) is on, the operation result is stored in (d) for the effective number of
digits. Therefore, when the DBCDDA(P) instruction is executed successively and the operation result for each execution is
stored in the same device, a part of the previous operation result may not be overwritten by the succeeding result and can
remain in (d).
To avoid this, create a program to clear the entire data storage areas (d)+0 to (d)+3 before executing the DBCDDA(P)
instruction.
Error code
(SD0) Description
3401H Data in the device specified by (s) is out of the range, 0 to 99999999.
[Example] Executing the DBCDDA(P) instruction when (s) is "91234056H" and then executing another DBCDDA(P) instruction when (s) is "00001234H"
(1) "91234056" is converted into a string.
(2) "1234" is converted into a string.
(3) A part of the previous conversion result remains in (d)+3.
(4) "91234056" is converted into a string.
(5) (d)+0 to (d)+3 are cleared.
(6) "1234" is converted into a string.
b31 b28 ∙∙∙
9
(1)
b27 b24 ∙∙∙
1
b23 b20 ∙∙∙
2
(s)+1 (s)
b19 b16 ∙∙∙
3
31H (1) 39H (9) (d)+0
33H (3) 32H (2) (d)+1
30H (0) 34H (4) (d)+2
36H (6) 35H (5) (d)+3
(d)+4 00H
b15 b12 ∙∙∙
4
b11 b8 ∙∙∙
0
b7 b4 ∙∙∙
5
b3 b0 ∙∙∙
6
b31 b28 ∙∙∙
0
(2)
b27 b24 ∙∙∙
0
b23 b20 ∙∙∙
0
(s)+1 (s)
b19 b16 ∙∙∙
0
32H (2) 31H (1) (d)+0
34H (4) 33H (3) (d)+1
00H (d)+2
36H (6) 35H (5) (d)+3
(d)+4 00H
b15 b12 ∙∙∙
1
b11 b8 ∙∙∙
2
b7 b4 ∙∙∙
3
b3 b0 ∙∙∙
4
(3)
b31 b28 ∙∙∙
9
(4)
b27 b24 ∙∙∙
1
b23 b20 ∙∙∙
2
(s)+1 (s)
b19 b16 ∙∙∙
3
31H (1) 39H (9) (d)+0
33H (3) 32H (2) (d)+1
30H (0) 34H (4) (d)+2
36H (6) 35H (5) (d)+3
(d)+4 00H
b15 b12 ∙∙∙
4
b11 b8 ∙∙∙
0
b7 b4 ∙∙∙
5
b3 b0 ∙∙∙
6
(5)
00H 00H (d)+0
00H 00H (d)+1
00H 00H (d)+2
00H 00H (d)+3
(d)+4 00H
b31 b28 ∙∙∙
0
(6)
b27 b24 ∙∙∙
0
b23 b20 ∙∙∙
0
(s)+1 (s)
b19 b16 ∙∙∙
0
32H (2) 31H (1) (d)+0
34H (4) 33H (3) (d)+1
00H (d)+2
00H 00H (d)+3
(d)+4 00H
b15 b12 ∙∙∙
1
b11 b8 ∙∙∙
2
b7 b4 ∙∙∙
3
b3 b0 ∙∙∙
4