7. APPLICATION INSTRUCTIONS
7
−
114
MELSEC-A
(3) For ASCII characters which can be displayed, refer to (3) in the section of the
LEDC instruction.
(4) For the conversion of alphanumeric characters into ASCII data in a sequence
program, use the ASC instruction.
LEDC
(1) Displays the comment (15 characters) of device specified at (S) at the LED
indicator on the front of CPU.
(2) When the device specified at (S) is not annotated with a comment or when it is
specified outside the comment range, the LEDC instruction results as follows.
Specification of (S)
Operation of LED
with comment
Comment of device is displayed at LED
indicator
Inside comment
range
specification
Without comment
Display of LED indicator is cleared.
Outside comment range specification
No Processing (Display of LED indicator
does not change.)
(3) If the comment contains characters which cannot be displayed on the LED
indicator, display cannot be done correctly. Characters which can be displayed
are as follows.
•
Numerals
:
0to9
•
Alphabets
:
A to Z (capitals)
•
Special symbols
:
<, >, =, *, /, ’, +, -
Execution Conditions
Display command
OFF
LED
LEDC
Executed
only once
ON
Executed
only once
Summary of Contents for MELSEC-A series
Page 1: ......
Page 2: ......
Page 13: ...A 11 MEMO...
Page 505: ...APPENDICES APP 100 MELSEC A MEMO...
Page 507: ......
Page 508: ......