670
7 APPLICATION INSTRUCTIONS
7.8 String Processing Instructions
Processing details
• These instructions convert the numerical value of each digit of the BCD 8-digit 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 DBCDDA(P) instruction is executed with BCD 8-digit data "00012345" stored in (s)
• When SM705 is off, the number of digits is fixed. Each of the leading "0"s of "00012345" is converted into 20H (space) and
stored.
• When SM705 is on, data is left-justified. "00012345" with the leading "0"s omitted ("12345") is converted into ASCII data
and stored, and 00H is stored in the end.
Status of SM705
Storage format of (d)
Reference
OFF
Data is stored in a fixed number of digits (8 digits)
Page 671 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 672 Operation of when SM705 (Number of
conversion digits selection) is on
∙∙∙
b31
(s)+1
(s)
b16
∙∙∙
b15
b0
∙∙∙
DBCDDA(P)
SM705: OFF
b15
b0
∙∙∙
20H
20H
(d)+0
SP
4
3
1
SP
SP
0
1
0
0
2
5
4
3
31H
20H
(d)+1
33H
32H
(d)+2
35H
34H
(d)+3
00H
35H
(d)+2
(d)+3
5
2
1
NULL
4
3
2
5
b15
b0
32H
31H
(d)+0
34H
33H
(d)+1
SM705: ON
Summary of Contents for MELSEC iQ-R Series
Page 1: ...MELSEC iQ R Programming Manual Instructions Standard Functions Function Blocks ...
Page 2: ......
Page 24: ...22 INDEX 2092 INSTRUCTION INDEX 2093 REVISIONS 2104 WARRANTY 2105 TRADEMARKS 2106 ...
Page 34: ...32 MEMO ...
Page 35: ...33 PART 1 PART 1 OVERVIEW This part consists of the following chapter 1 OVERVIEW ...
Page 68: ...66 1 OVERVIEW 1 5 Precautions on Programming MEMO ...
Page 1448: ...1446 14 REDUNDANT SYSTEM INSTRUCTIONS 14 2 Disabling Enabling System Switching MEMO ...
Page 1972: ...1970 33 TIME DATA TYPE FUNCTIONS 33 4 Division MEMO ...
Page 2067: ...APPX Appendix 5 PID Control Program Examples 2065 A 252 Set PID control data for loop 2 ...
Page 2109: ......