Mitsubishi Electric MELSEC FX3U Programming Manual page 814

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
Reset of state relays at one time and output disability
For output disability corresponding to emergency stop, follow "Cautions on safety" described in the PLC
manual.
1) Resetting many state relays at one time by specifying a range
Fifty-one state relays from S0 to S50 are reset at one time.
Ladder block
SFC block
2) Disabling arbitrary output of state relays in the ON status
Ladder block
SFC block
3) Setting to OFF all output relays (Y) in a PLC
Even while the special auxiliary relay M8034 is ON, the sequence program is executed continuously, but
all output relays (Y) turn OFF. (These output relays are in the ON status in the monitor.)
Ladder block
Even while the special auxiliary relay M8034 is ON, the sequence
program is executed continuously, but all output relays (Y) turn OFF.
Position of MPS, MRD and MPP instructions
MPS, MRD or MPP instruction cannot be used directly from a bus line in a state relay inside the STL.
Program MPS, MRD or MPP instruction after LD or LDI instruction as shown below.
812
Reset
FNC 40
0
50
S0
Output disable
10
Output disable
LD
X001 X003
MPS X004
10
MRD
X005
MPP
STL bus line
S0 S50
ZRST
State relays from S0 to
S50 are reset at one time.
SET M10
Y001
M10
Y005
M30
T4
M8034
Y001
Y002
Y003
35 SFC Program and Step Ladder
Even when the output
disable contact turns ON,
this output remains ON.
When the output disable
contact turns ON, these
outputs turn OFF.
35.1 SFC Program