10 MULTIPLE CPU HIGH-SPEED TRANSMISSION DEDICATED INSTRUCTIONS
10.1 Overview
865
10
The instructions that can be executed concurrently
For the Universal model QCPU, the multiple CPU high-speed transmission dedicated instructions can be concurrently
executed within the range satisfying the following formula.
When the number of blocks used for the multiple CPU high-speed transmission dedicated instructions exceeds the total
number of blocks in the multiple CPU high speed transmission area, the instruction will not be executed in the scan (no
processing) but executed at the next scan.
Note that the instruction will be completed abnormally when the number of empty blocks in the multiple CPU high speed
transmission area is less than the setting values of SD796 to SD799 (maximum number of used blocks for multiple CPU high-
speed transmission dedicated instruction setting) at the execution of the instruction.
The following table shows execution possibility of the multiple CPU high-speed transmission dedicated instructions when the
number of empty blocks in the multiple CPU high speed transmission area is less than the number of blocks used for the
multiple CPU high-speed transmission dedicated instructions or the setting values of SD796 to SD799.
*1 The number of blocks used for the multiple CPU high-speed transmission dedicated instruction.
*2 The number of empty blocks in the multiple CPU high-speed transmission area.
*3 Setting values from SD796 of SD799.
Magnitude relation between SD setting
value and the number of empty blocks
Magnitude relation between the number of blocks used for the instructions
*1
and the
number of empty blocks
Number of blocks used for the
instruction
*1
Number of empty blocks
*2
Number of blocks used for the
instruction
*1
> Number of empty blocks
*2
SD setting value
*3
Number of empty blocks
*2
Executed Not executed (no processing)
SD setting value
*3
> Number of empty blocks
*2
Completed abnormally
The number of blocks that
can be used in each CPU
Total number of blocks used for the
instructions concurrently executed
To Next Page
Loading...
