Mitsubishi Electric MELSEC-Q00U(J)CPU User Manual page 229

(b) High-speed buffer transfer function
Open the High Speed Buffer Transfer Setting window and set the transfer ranges.
Project window
Settings", "High Speed Interrupt Settings" button
Item
Select an assignment method (Points/Start or
Assignment Method
Start/End).
Select an buffer memory address input
Buffer Memory Address
system (DEC. or HEX.).
Start I/O number  10
Start I/O No. (HEX)
Number of words transferred (1, 2 to FFFE
Points (DEC)
Start address (0
Buffer Memory Start
End address (0
Buffer Memory End
PLC Side Device Start Start device number
PLC Side Device End End device number
*1 An odd address is allowed when the number of words transferred is set to 1.
Mount the target modules of this function on a main base unit. (Access time to modules mounted on a main base unit is
shorter than that to modules on an extension base unit.)
(2) Precautions
(a) Executability of this function
This function is executed when all of the following conditions are met.
• The EI instruction is being executed.
• The CPU module is running.
• The high-speed interrupt pointer (I49) is not masked by the IMASK instruction. (Default: Not masked)
For the IMASK and EI instructions, refer to the following.
MELSEC-Q/L Programming Manual (Common Instruction)
[Parameter] [PLC Parameter]
Description
(0 to FF )
H H
)
H
to FFFF )
H H
to FFFF )
H H
"PLC System" tab
"High Speed Buffer Transfer Setting" button
Restrictions
-
Intelligent function modules only
• Intelligent function modules only
• Even addresses and even words
*1
only
D, W, D (extended data register), W
(extended link register), R, and ZR
CHAPTER 3 FUNCTIONS
"System Interrupt
Number of settings
-
Up to six settings for
read and write,
respectively
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