7. APPLICATION INSTRUCTIONS
7
−
116
MELSEC-A
7.9.3 Character display instructions
(LEDA, LEDB)
The LEDA/LEDB instructions are used as the starting command for the dedicated
instructions for the AnA, A2AS, AnSH, AnU, QCPU-A (A Mode) and A2USH board.
For details, refer to the AnSHCPU/AnACPU/AnUCPU Programming Manual
(Dedicated Instructions).
Available Device
Bit device
Word (16-bit) device
Constant
Pointer Level
Ca
rr
y
fla
g
Err
o
r
fla
g
X Y M L S B F T C D W R A0
A1 Z V K H P I N
D
igit specification
Inde
x
M9012 (M9010, M9011)
Functions
(1) Displays the ASCII characters spexified by LEDA and LEDB at the LED
indicator on the CPU front.
(2) The displays of LEDA and LEDB are as shown below.
(3) The following items can be displayed by the display instructions on the LED
display on the front panel of the CPU module.
•
Numeral
: 0 to 9
•
Alphabet
: A to Z (Capitals)
•
Special symbol :
<, >, =,*, /, ’, +, -
AnS
AnN
AnSH
An A1FX
A3H
A3M
A3V AnA
AnU, A2AS
A2USH-S1
A2USH board
QCPU-A
(A Mode)
A0J2H
A2C
A52G
A73
A3N
board
Applicable
CPU
X O O X
X
X X O O
Remark
*1: A3N only.
*2: A3 only.
Display command
LEDA
LEDB
ASCII characters
(first 8 characters)
ASCII characters
(last 8 characters)
Specification of 16 characters
displayed at LED indicator
LED indicator at CPU front (16 characters)
Specification of first
half 8 characters
Specification of last
half 8 characters
*2
*1
Summary of Contents for MELSEC-A series
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