D-45
Mnemonic Function
MPS
Store the current result of the internal PLC operations
Operand
None
Explanations:
To save contents of the accumulative register into the operation result. (the result operation pointer
pluses 1)
Mnemonic Function
MRD
Reads the current result of the internal PLC operations
Operand
None
Explanations:
Reading content of the operation result to the accumulative register. (the pointer of operation result
doesn’t move)
Mnemonic Function
MPP
Reads the current result of the internal PLC operations
Operand
None
Explanations:
Reading content of the operation result to the accumulative register. (the stack pointer will decrease
1)
Program Example:
Ladder diagram:
Command code:
Operation:
X0
Y1
X1
M0
X2
Y2
END
MPP
MRD
MPS
LD
X0
Load contact A of X0
MPS
Save in stack
AND
X1
Connect to contact A of X1 in
series
OUT
Y1
Drive Y1 coil
MRD
Read from the stack (without
moving pointer)
AND
X2
Connect to contact A of X2 in
series
OUT
M0
Drive M0 coil
MPP
Read from the stack
OUT
Y2
Drive Y2 coil
END
End
program
