Operation Results Push, Read, Pop (Mps, Mrd, Mpp) - Mitsubishi MELSEC QCPU Programming Manual

5 SEQUENCE INSTRUCTIONS

5.2.2 Operation results push, read, pop (MPS, MRD, MPP)

Internal Devices
Set
(System, User)
Data
Bit Word
[Instruction Symbol] [Execution Condition]
[Functions]
MPS
(1) Stores in memory the operation result (ON or OFF) immediately prior to the MPS instruction.
(2) Up to 16 MPS instructions can be used successively.
However, only up to 11 can be created in the ladder mode.
If an MPP instruction is used during this process, the number of uses calculated for the MPS
instruction will be decremented by one.
MRD
(1) Reads the operation result stored for the MPS instruction, and uses that result to perform the
operation in the next step.
MPP
(1) Reads the operation result stored for the MPS instruction, and uses that result to perform the
operation in the next step.
(2) Clears the operation results stored by the MPS instruction.
(3) Subtracts 1 from the number of MPS instruction times of use.
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Usable Devices
MELSECNET/10(H)
File Direct J \
Register
Bit Word
MPS, MRD, and MPP are not displayed as a part of the ladder display.
QCPU
PLC CPU
Process CPU
Basic
High Performance
Special
Index
Function
Register
Module
Zn
U \G
MPS
MRD
MPP
MELSEC-Q/QnA
QnA Q4AR
Constant
Other
K, H
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