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FX Series Programmable Controller Diagnostic Devices 6
6-6
6.5 Step Ladder (STL) Flags
(M8040 to M8049 and D8040 to D8049)
For symbol key see pa
g
e 6-1.
General note:
• All STL states are updated when the END instruction is executed.
Diagnostic
Device
Operation
Diagnostic
Device
Operation
M8040 ( )
STL transfer
disable
When ON STL state trans-
fer is disabled
D8040 (
)
Lowest active
STL step
Up to 8 active STL states,
from the ran
g
e S0 to S899,
are stored in D8040 to D8047
in ascendin
g
numerical order.
(Updated at END)
M8041 ( S)
Transfer start
When ON STL transfer from
initial state is enabled dur-
in
g
automatic operation
(ref. IST FNC 60)
D8041 (
)
2nd active
STL state
M8042 ( )
Start pulse
A pulse output is
g
iven in
response to a start input
(ref. IST FNC 60)
D8042 (
)
3rd active
STL state
M8043 ( S)
Zero return
complete
On durin
g
the last state of
ZERO RETURN mode
(ref. IST FNC 60)
D8043 (
)
4th active STL
state
M8044 ( S)
Zero point
condition
ON when the machine zero
is detected
(ref. IST FNC 60)
D8044 (
)
5th active STL
state
M8045 ( )
All output
reset disable
Disables the ‘all output reset’
function when the operation
mode is chan
g
ed
(ref. IST FNC 60)
D8045 (
)
6th active STL
state
M8046 (
)
STL state ON
ON when STL monitorin
g
has been enabled (M8047)
and there is an active STL
state
D8046 (
)
7th active STL
state
M8047 ( )
Enable STL
monitorin
g
When ON D8040 to D8047
are enabled for active STL
step monitorin
g
D8047 ( )
8th active STL
state
M8048 (
)
Annunciator
ON
(Not FX
0(S)
,
FX
0N
)
ON when Annunciator moni-
torin
g
has been enabled
(M8049) and there is an
active Annunciator fla
g
D8048 Reserved
M8049 ( )
Enable
Annunciator
monitorin
g
(Not FX
0(S)
,
FX
0N
)
When ON D8049 is enabled
for active Annunciator state
monitorin
g
D8049 ( )
Lowest active
Annunciator
(Not FX
0(S)
,
FX
0N
)
Stores the lowest currentl
y
active Annunciator from the
ran
g
e S900 to S999
(Updated at END)