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Questions

  • No : 22688
  • Release Date : 2018/09/03 17:29
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Speeds of access to file registers

When Q series modules are used, is the speed of access to the file registers registered in the standard RAM different from the speed of access to the file registers in a memory card (SRAM card) under the same condition (same instruction)?
Category : 

Answer

If file registers are registered in the standard RAM and "R" is specified by an instruction, the processing time is the same as is the case with the internal device "D".
If file registers are registered in a memory card and "ZR" is specified by an instruction, the processing time substantially lengthens between a few and 10 times or greater, according to set conditions.
Product Name
MELSEC-Q Series
Series
CPU
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