Sequence Instructions

POINT

(1)Ladders differ as shown below between when MPS, MRD and MPP are used and when they are not used.

Ladder using MPS, MRD and MPP Ladder not using MPS, MRD and MPP

(2)Use the same number of MPS and MPP instructions. If they differ in the number of used instructions, operation will be performed as described below.

1)If the MPS instructions are used more than MPP instructions, the ladder is changed and the built-in PLC function performs operation according to the new ladder.

Before change

Coding

When MPP is replaced by NOP

After change

Coding

2)If the MPP instructions are used more than MPS instructions, that ladder block results in a ladder creation error, and the built-in PLC function cannot perform normal operation.

SEQUENCE PROGRAMMING

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Mitsubishi Electronics FR-A700, 700 Series specifications 121