Mitsubishi Electric MELSEC iQ-R Series, Programming Manual

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7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
647
7
Processing details
• These instructions convert the digit in decimal notation of the 32-bit binary data in the device specified by (s) to the ASCII
code, and store the converted data in the device number specified by (d) and later.
• The format of the decimal ASCII data to be stored in (d) depends on the status of SM705 (Number of conversion digits
selection).
*1 For the firmware version of the CPU module supporting SM705, refer to the following.

MELSEC iQ-R CPU Module User's Manual (Application)
A CPU module which does not support SM705 operates in the same way as SM705 is off even if it is turned on.
■ Operation overview
The following figure shows the operation when SM705 (Number of conversion digits selection) is off and on.
Ex.
When the DBINDA(P) instruction is executed with a numeric value "-123456" stored in (s)
• When SM705 is off, the number of digits is fixed. The first character is a sign and it is 2DH(-) in the above example. (If (s) is
0 or positive, the first character is 20H (space).) The numeric part is right-justified. When the length of the numeric part is
less than 10 digits, the ASCII code 20H (space) is stored for the ASCII code of the upper digit(s).
• When SM705 is on, data is left-justified. When the length of the numeric part is less than 10 digits, 00H is stored in the end.
Status of SM705
*1
Storage format of (d) Reference
OFF Data is stored in a fixed number of digits (a sign + 10 digits) Page 648 Operation of when SM705 (Number of
conversion digits selection) is off
ON Each digit is stored left-justified depending on the value of (s). Page 649 Operation of when SM705 (Number of
conversion digits selection) is on
b31 b0 ∙∙∙
(s)
DBINDA(P)
SM705: OFF
b15 b0 ∙∙∙
20H 2DH (d)+0 - 2 1 SP SP SP
20H 20H (d)+1
31H 20H (d)+2
33H 32H (d)+3
35H 34H (d)+4
00H 36H (d)+5
35H 34H (d)+2
00H 36H (d)+3
(d)+4
(d)+5
4 3 6 5 SP
NULL
- 6 5 3 2 1
NULL
4
b15 b0 ∙∙∙
31H 2DH (d)+0
33H 32H (d)+1
SM705: ON
-123456