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7.9 Display Instructions
7.9.3 Resetting error display or annunciator
LEDR
7.9.3
Resetting error display or annunciator
LEDR
Function
Resets the self-diagnostics 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-diagnostics errors occur.
(a) When a self-diagnostics error that allows continued operation occurs.
When the self-diagnostics error that allows continued operation of the CPU module is
displayed, the "ERROR/ERR." LED or error indication on the front of CPU module is
reset. It is necessary to reset SM0, SM1, and SD0 by 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 occurs.
If the LEDR instruction is executed after the battery has been replaced, the "BAT. ARM/
BAT." LED on the front of CPU module and the error display is reset.
SM51 is also turned OFF at this time.
LEDR
indicates the following instruction.
LEDR
Input argument,
EN:
Executing condition
:Bit
Output argument,
ENO:
Execution result
:Bit
Setting
data
Internal device
R, ZR
J
\
U
\G
Zn
Constant
Others
Bit
Word
Bit
Word
−
−
Universal
UD
High
Performance
Structured ladder
ST
LE
D
R
EN
ENO
LE
D
R
(EN);
ENO:=
Summary of Contents for MELSEC Q Series
Page 1: ...Structured Programming Manual Mitsubishi Programmable Controller QCPU Common Instructions ...
Page 2: ......
Page 14: ...A 12 MEMO ...
Page 340: ...6 178 MEMO MTR ...
Page 708: ...7 368 MEMO ...
Page 776: ...8 68 MEMO ...
Page 796: ...9 20 MEMO ...
Page 804: ...App 8 MEMO ...
Page 812: ...Index 8 MEMO ...
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