Mep, Mef - Mitsubishi Electric MELSEC FX3U Programming Manual

FX /FX /FX Series Programmable Controllers
3G 3U 3UC
Programming Manual - Basic & Applied Instruction Edition
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
The operation results up to the MEP instruction become conductive when the driving contacts turn ON
from OFF.
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 OFF
from ON.
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
MEP
MEP
MEF
MEF
2. Applicable devices
Bit Devices
Instruc-
System User
tion
X Y M T C S D .b KnX KnY KnM KnS T C D R U \G
MEP
MEF
Explanation of function and operation
1. MEP instruction (ON during rising edge of driving contacts results)
Circuit Program
X000 X001
2. MEF instruction (ON during falling edge of driving contacts results)
Circuit program
X000 X001
Mnemonic Operation Condition
Basic Instruction
−
1 step
MEP
Mnemonic Operation Condition
Basic Instruction
−
1 step
MEF
Digit Specification
There are no applicable devices.
There are no applicable devices.
List program
0 LD
SET M0 1 AND
2 MEP
3 SET
List program
0 LD
SET M0 1 AND
2 MEF
3 SET
Continuous
Operation
Pulse (Single)
Operation
Continuous
Operation
Pulse (Single)
Operation
Word Devices
Special
System User Index
Unit
V Z Modify K H
Timing chart
X000
OFF
X000
X001
OFF
X001
M0
OFF
M0
Timing chart
X000
OFF
X000
X001
OFF
X001
M0
OFF
M0
7 Basic Instruction
7.11 MEP, MEF
Others
Con- Real Charac-
Pointer
stant Number ter String
E " " P
ON
ON
ON
ON OFF
ON OFF
ON
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