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CHAPTER 10 DEDICATED INSTRUCTIONS
10
10.1 List of Dedicated Instructions
(a) List of dedicated instructions
* 1 Clock data cannot be written to a safety CPU module by the REQ instruction.
Instruction Description
Target station (other stations)
Target network
Target station
type
READ
SREAD
Reads data from the device of another station's programmable controller. (In
units of words)
For the SREAD instruction, when data read is completed, the device on the
other station is turned on. Data reading from the other station by the SREAD
instruction can be checked.
• CC-Link IE Field
Network
• CC-Link IE
Controller
Network
• MELSECNET/H
• MELSECNET/10
• Ethernet
• QSCPU
•QCPU
•LCPU
•QnACPU
• Intelligent device
station
WRITE
SWRITE
Writes data in the device of another station's programmable controller. (In
units of words)
For the SWRITE instruction, when data write is completed, the other station's
device is turned on. It can be confirmed that data was written to the other
station by the SWRITE instruction.
•QCPU
•LCPU
•QnACPU
• Intelligent device
station
REQ
Reads/write clock data from/to a programmable controller on another
station.
*1
• QSCPU
•QCPU
•LCPU
•QnACPU
• Ethernet adapter
module
Command
READ
Word device
Channel 2
Channel 1
2594
Word device
2594
Safety CPU module
Safety CPU module
Master/local module Master/local module
Command
WRITE
Channel 2
Channel 1
Word device
361
Safety CPU module
CPU module
Master/local module
Network module
Command
REQ
Safety CPU module
CPU moduleMaster/local module Network module
Channel 2
Channel 1
clock data
SD210