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FX Series Programmable Controller Diagnostic Devices 6
6-5
6.4 PLC Operation Mode
(M8030 to M8039 and D8030 to D8039)
For symbol key see pa
g
e 6-1.
Diagnostic
Device
Operation
Diagnostic
Device
Operation
M8030 ( )
Batter
y
LED
OFF
(Not FX
0(S
),
FX
0N
)
Batter
y
volta
g
e is low but
BATT.V LED not lit
D8030 (
)
(FX
0N
only)
Value read from first settin
g
“pot” in msec, (0 to 255)
M8031 ( )
Non-latch
memor
y
all
clear
Current device settin
g
s are
reset at next END, i.e. con-
tacts, coils and current data
values for Y, M, S, T, C and
D devices respectivel
y
. Spe-
cial devices which have
default settin
g
s are
refreshed with those defaults
D8030
(Not FX
0(S)
,
FX
0N
)
This re
g
ister is used as the
3rd stora
g
e device when Z or
V has been selected as the
destination for the SPD
instruction (FNC 56)
M8032 ( )
Latch memor
y
all clear
D8031 (
)
(FX
0N
only)
Value read from second set-
tin
g
“pot” in msec, (0 to 255)
M8033 ( )
Memor
y
hold
in ‘stop’ mode
The device statuses and set-
tin
g
s are retained when the
PLC chan
g
es from RUN to
STOP and back into RUN
D8032 -D8038 Reserved
M8034 ( )
All outputs
disable
All of the ph
y
sical switch
g
ear for activatin
g
outputs is
disabled. However, the pro-
g
ram still operates normall
y
.
M8035 ( S)
Forced
operation
mode
B
y
usin
g
forced operation
mode, i.e.M8035 is turned
ON, it is possible to perform
remote RUN/STOP or
pulsed RUN/ STOP opera-
tion.
Please see Chapter 10 for
example operation
M8036 ( S)
Forced RUN
si
g
nal
M8037 ( S)
Forced STOP
si
g
nal
M8038( )
RAM file
re
g
isters clear
(FX
(2C)
onl
y
)
Used to clear the contents of
the 2000 RAM file re
g
isters
of an
y
data
M8039 ( )
Constant
scan mode
When ON the PLC executes
the user pro
g
ram within a
constant scan duration. The
difference between the
actual end of the pro
g
ram
operation and the set con-
stant scan duration causes
the PLC to ‘pause’.
D8039 ( )
Constant
scan duration
This re
g
ister can be written to
b
y
the user to define the dura-
tion of the constant scan. Res-
olutions of 1msec are
possible.
This re
g
ister has a default set-
tin
g
0 msec which will be initi-
ated durin
g
power ON.