5 SEQUENCE INSTRUCTIONS
5.2 Association Instructions
145
5
Operation results conversion
MEP, MEF
■MEP
• If operation results up to the MEP instruction are rising edge (from OFF to ON), goes ON (continuity status). If operation
results up to the MEP instruction are anything other than rising edge, goes OFF (non-continuity status).
• Use of the MEP instruction simplifies pulse conversion processing when multiple contacts are connected in series.
■MEF
• If operation results up to the MEF instruction are falling edge (from ON to OFF), goes ON (continuity status). If operation
results up to the MEF instruction are anything other than falling edge, goes OFF (non-continuity status).
• Use of the MEF instruction simplifies pulse conversion processing when multiple contacts are connected in series.
• There is no operation error in the MEP or MEF instruction.
• A program which performs pulse conversion to the operation results of X0 and X1
• The MEP and MEF instructions will occasionally not function properly when pulse conversion is conducted
for a contact that has been indexed by a subroutine program or by the FOR to NEXT instructions. If pulse
conversion is to be conducted for a contact that has been indexed by a subroutine program or by the FOR
to NEXT instructions, use the EGP/EGF instructions.
• The MEP or MEF instruction operates based on the operation result performed starting from the LD
instruction immediately before the MEP or MEF instruction to immediately before the MEP or MEF
instruction. Therefore, use them at the same position as that of the AND instruction. The MEP and MEF
instructions cannot be used at the LD or OR position.
Setting
data
Internal device R, ZR J\ U\G Zn Constant Others
Bit Word Bit Word
[Ladder Mode] [List Mode]
Basic
Process
High
performance
Redundant
Universal
LCPU
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