Operation result push, read, pop
(MPS, MRD, MPP)
I
When ladder is displayed, these instructions
..
d
are not visible.
M
PS
(a) MPS
The MPS instruction stores the operation result
(ONIOFF)
immediately preceding the
MPS instruction.
A
maximum
of
12
MPS instructions can be used consecutively,
however if an MPP instruction is used in between the MPS instructions, the maximum
number is reduced
by
1.
(b)MRD
The MRD instruction reads the operation result stored by the MPS instruction, and
resumes the operation with that operation result, starting at the next step.
(c) MPP
The MPP instruction reads the operation result stored by the MPS instruction, and
resumes the operation with that operation result, starting at the next step. The it clears
the operation result stored
by
the MPS instruction.
On the following page there is an example ladder logic program and its equivalent
sequence instruction list using the instructions described in this section.
103
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