Mitsubishi Electric M800VW Series Manual page 152

Plc development

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Table of Contents

M800V/M80V Series PLC Development Manual

5 Peripheral Development Environment (GX Works2)

5.6 Developing Simple Project

 Restriction on MPS instruction use

Condition: Only up to seven MPS instructions can be used consecutively. When MPP instruction is used, one more MPS

instruction becomes available.

Workaround: When using a ladder containing the number of MPS instructions that exceeds the upper limit, use a substitute

ladder as follows.

Ladder screen on GX Works2

Ladder block is divided by

Set the NC parameter "#6456/bit0" to "1" to display an error dialog on GX Works2 when sequence programs, which do not

conform to restrictions described in "Restriction on use of ANB instruction and ORB instruction" and "Restriction on MPS

instruction use", are written. This prevents PLC from becoming RUN status. When an error dialog is displayed, use the above

substitute ladder.

Ten MPS instructions are

used consecutively.

Consecutiveness of MPS

instructions is reset by 7 MPP

instructions following 7 MPS

instructions, which enables

additional 3 MPS instructions to

List display

IB-1501614-B