174
FX
3U
/FX
3UC
Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
7 Basic Instruction
7.8 MPS, MRD, MPP
7.8
MPS, MRD, MPP
Outline
FX
3U
and FX
3UC
PLCs have 11 memories called "Stack" which store the intermediate result (ON or OFF) of
operations.
Instruction format
1. Applicable devices
Instruc-
tion
Bit Devices
Word Devices
Others
System User
Digit Specification
System User
Special
Unit
Index
Con-
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
MPS
There are no applicable devices.
MRD
There are no applicable devices.
MPP
There are no applicable devices.
Memory Point Store
MPS
Basic Instruction
1 step
MPS
−
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
MRD
Memory Read
Basic Instruction
1 step
MRD
−
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition
MPP
Memory POP
Basic Instruction
1 step
MPP
−
Continuous
Operation
Pulse (Single)
Operation
Mnemonic
Operation Condition