5 - 10 5 - 10
MELSEC-Q/QnA
5 SEQUENCE INSTRUCTIONS
POINTS
(1) The following shows ladders both using and not using the MPS, MRD, and MPP
instructions.
Ladder Using the MPS, MRD and MPP Instruction. Ladder not Using MPS, MRD, and MPP Instructions.
Y10
X0
X1 X2
X3
X4
Y11
X5
Y12
Y10
X0
X1 X2
X4
Y11
Y12
X0
X1
X3
X0 X1 X5
(2) The MPS and MPP instructions must be used the same number of times.
Failure to observe this will not correctly display the ladder in the ladder mode of the
peripheral device.
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