Mitsubishi Electronics FX3G User Manual
209
FX
3S
/FX
3G
/FX
3GC
/FX
3U
/FX
3UC
Series
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.11 MEP, MEF
1
Introdu
ction
2
Ov
ervi
ew
ew
3
Instruction
Li
st
4
D
evices
in Det
ai
l
5
Specifi
ed the
De
vice
&
C
onst
ant
ant
6
Bef
ore
ore
Pr
og
ra
mmi
ng
ng
7
Bas
ic
ic
Instruction
8
FN
C00-FN
C00-FN
C0
9
Program Fl
ow
9
FNC
10-FN
C19
Mov
e & Com
e & Com
pare
10
FNC
20-FNC
29
Arith. & Lo
gi
c
Operati
on
7.11
MEP, MEF
Outline
MEP and MEF commands are instructions that change the operation results to pulses so that device numbers do not
have to be specified.
1) MEP
have to be specified.
1) MEP
The operation results up to the MEP instruction become conductive when the driving contacts turn from OFF to
ON.
The use of MEP instructions simplifies the process of changing driving contacts to pulses when multiple contact
points connect in a series.
ON.
The use of MEP instructions simplifies the process of changing driving contacts to pulses when multiple contact
points connect in a series.
2) MEF
The operation results up to the MEF instruction become conductive when the driving contacts turn from ON to
OFF.
The use of MEF instructions simplifies the process of changing driving contacts to pulses when multiple contact
points connect in a series.
OFF.
The use of MEF instructions simplifies the process of changing driving contacts to pulses when multiple contact
points connect in a series.
1. Instruction format
2. Applicable devices
Explanation of function and operation
1. MEP instruction (ON during rising edge of driving contacts results)
2. MEF instruction (ON during falling edge of driving contacts results)
Instruc-
tion
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
stant
stant
Real
Number
Charac-
ter String
Pointer
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
V Z Modify K H
E
" "
P
MEP
There are no applicable devices.
MEF
There are no applicable devices.
MEP
MEP
Basic Instruction
MEP
−
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
Mnemonic
Operation Condition
1 step
MEF
MEF
Basic Instruction
MEF
−
Continuous
Operation
Pulse (Single)
Pulse (Single)
Operation
Mnemonic
Operation Condition
1 step
Circuit Program
List program
LD
AND
MEP
SET
AND
MEP
SET
0
1
2
3
1
2
3
ON
X000
Timing chart
X000 X001
M0
SET
X000
X001
X001
M0
OFF
ON
X001
OFF
ON
M0
OFF
Circuit program
List program
LD
AND
MEP
SET
AND
MEP
SET
0
1
2
3
1
2
3
ON
X000
Timing chart
X000 X001
M0
SET
X000
X001
X001
M0
OFF
ON
X001
OFF
ON
M0
OFF
OFF
OFF