Mitsubishi Electric MELSEC Q Series Handbook page 42

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REPLACEMENT OF CPU MODULE
*12 The points indicate the number of usable points in the program.
*13 For the QnAS and Q series, the steps relay (S) is dedicated for SFC programs.
*14 A memory card (sold separately) is required.
*15 The points apply when the size of a memory card used is 2M bytes.
*16 The number of comment points indicate the maximum number of points that can be written to the CPU module.
*17 The High-speed Universal model QCPU (QnUDVCPU) supports an SD memory card.
*18 The High-speed Universal model QCPU (QnUDVCPU) only can store data into the standard RAM.
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