437
LEDR
1
2
3
4
4
6
7
8
7.9
D
isplay instru
ctions
7.9.3
LEDR
Program
E
xamp
l
e
(1) Program which outputs the comment of Y60 to Y30 to Y39 when X0 is turned ON.
[Ladder Mode]
[List Mode]
F
unct
i
on
Resets the self-diagnosis error display so that annunciator display or operation can be continued.
With one execution of this instruction, either error display or annunciator is reset.
(1) Operation when self-diagnosis error is generated
(a) If the self-diagnosis error is one which allows continued operation.
If the self-diagnosis error being displayed is one that will allow continued operation of the CPU module, the
"ERROR/ERR." LED or error indication is reset. It will be necessary to reset SM0, SM1, and SD0 at the user
program, because they are not reset automatically.
Since the cause of the error displayed at this time has a higher priority over annunciator, no action for resetting the
annunciator is taken.
(b) When a battery error is generated.
If the LEDR instruction is executed after the battery has been replaced, the "BAT. ARM/ BAT." LED at the front of the
CPU module and the error display will be reset.
SM51 is also turned OFF at this time.
(2) Operations when an annunciator (F) is ON.
(a) When the CPU module has no LED display
The following operations will be conducted when the LEDR instruction is executed:
1) "USER" LED flickers, and is turned OFF
2) The annunciators (F) stored in SD62 and SD64 are reset, and the F numbers for SD65 to SD79 are moved up.
3) The data newly stored at SD64 is transmitted to SD62.
4) The data at SD63 is decremented by -1. However, if SD63 is 0, it remains 0.
LEDR
Error display and annunciator reset
7.9.3
LEDR
Setting
Data
Internal Devices
R, ZR
J \
U \G
Zn
Constants
Other
Bit
Word
Bit
Word
––
––
Step
Instruction
Device
Process
High
performance
Redundant Universal
LCPU
Bas
i
c
Command
LE
DR
LEDR
Before
execut
i
on
200
15
200
99
5
255
83
0
SD62
SD63
SD6
4
SD65
SD66
SD67
SD78
SD79
After
execut
i
on
99
1
4
99
5
255
83
0
0
SD62
SD63
SD6
4
SD65
SD66
SD77
SD78
SD79
F
number
storage
area
N
umber
of
reg
i
stered
F
numbers
Decrements
1
.