Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 649

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
Status of SM705 Storage format of (d)
OFF Data is stored in a fixed number of digits (a sign + 10 digits)
ON Each digit is stored left-justified depending on the value of (s).
*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)
b31 ∙∙∙ b0
(s) -123456
SM705: OFF
DBINDA(P)
SM705: ON
• 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.
b15 ∙∙∙ b0
(d)+0 20H 2DH -
(d)+1 20H 20H
(d)+2 31H 20H
(d)+3 33H 32H
(d)+4 35H 34H
(d)+5 00H 36H
b15 ∙∙∙ b0
(d)+0 31H 2DH -
(d)+1 33H 32H
(d)+2 35H 34H
(d)+3 00H 36H
(d)+4
(d)+5
Reference
Page 648 Operation of when SM705 (Number of
conversion digits selection) is off
Page 649 Operation of when SM705 (Number of
conversion digits selection) is on
SP SP SP SP 1 2 3 4
1 2 3 4 5 6
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7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
5 6
NULL
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