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MELSEC-Q
9 DEDICATED INSTRUCTIONS
9 DEDICATED INSTRUCTIONS
Dedicated instructions enable easy programming to use the functions of an intelligent
function module.
This chapter explains dedicated instructions available for the QJ71DN91.
(1) List of dedicated instructions
Dedicated instructions available for the QJ71DN91 are shown below.
Dedicated instruction
Function overview
Reference section
DNTMRD
This instruction ensures data consistency when the
CPU module reads data from the master function
receive data area of the specified module.
9.2
DNTMWR
This instruction ensures data consistency when the
CPU module writes data to the master function
transmit data area of the specified module.
9.3
DNTSRD
This instruction ensures data consistency when the
CPU module reads data from the slave function
receive data area of the specified module.
9.4
DNTSWR
This instruction ensures data consistency when the
CPU module writes data to the slave function
transmit data area of the specified module.
9.5
(2) Available
devices
Devices available for the dedicated instructions are listed below.
Internal device
File register
Constant
*1
Bit
Word
—
T, ST, C, D ,W
R, ZR
K, H, $
*1: The available devices are described in the Constant rows in each section.
9
Summary of Contents for QJ71DN91
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