Mitsubishi MELSEC A1SD70 User Manual

1 I
Name
Special relays M I
Description
The special relays (M) are internal relays which have a predefined function. They
must not be switched
ON/OFF in the sequence program, except for those
indicated.
A table of all the special relays and details of their functions is shown
below.
110 unit verify error
Number
'1M9000
OFF: Normal condition
ON: Presence of error
"Mm2
"M9005
AC down detection
M9006
OFF: AC power good
ON: AC power down
*' M9007
Battery low latch
*l M9008
OFF: Normal condition
ON: Battery low
M9009
M9010
Operation error flag *'M9011 OFF: No error
ON Presence of error
M9012
M9016
DUTY
M9017
M9020
to
M9024
nl n2 M9MO
Fuse blown
OFF: Normal condition
ON: Presence of blown
fuse output unit
Battery low
OFF: Normal condition
ON: Battery low
Annunciator OFF: No detection
detection ON: Detection present
ON: Presence of error
Carry flag OFF: Carry OFF
ON: Output clear
Data memory clear
flag ON Output clear
OFF: No processing
67

Mitsubishi MELSEC A1SD70 Specifications

General

Brand	Mitsubishi
Model	MELSEC A1SD70
Category	Controller
Language	English