Mitsubishi Electric QJ71LP21 Reference Manual page 159

6 PROGRAMMING
Execution
station
Name
Instruction
QnPH QnPRH
CPU CPU
Data
SEND
send
Data
RECV
receive
Other
station
READ
word
SREAD
device
read
Other
station
WRITE
word
SWRITE
device
write
Other
station
REQ
transient
request
Message
receive
RECVS (1 scan
completi
on)
6 - 12
2
SEND: Writes data to the target station (network module) of the target
network No.
RECV: Reads the data sent by SEND to the CPU device.
CPU Network module
Channel 1
Channel 2
SEND Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Reads the CPU device data of the target station of the target network
No. (in 16 bit units).
CPU Network module Network module
Channel 1
Channel 2
READ
Channel 3
Channel 4
Word device
Channel 5
2594 Channel 6
Channel 7
Channel 8
Writes data to the CPU device of the target station of the target
network No. (in 16 bit units).
(SWRITE can turn ON the device of the target station.)
CPU Network module Network module
Channel 1
Channel 2
Channel 3
WRITE Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Performs "remote RUN" or "clock data read/write" to the other station.
CPU
Network module Network module
Channel 1
Channel 2
Channel 3
REQ Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Receives the channel data, which was sent by SEND, within an
interrupt program and reads that data to the CPU device immediately.
Processing is completed when the instruction is executed.
CPU
Network module
Channel 1
Channel 2
Channel 3
SEND
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Description
Network module
Logical channel 1 (Channel 1)
Logical channel 2 (Channel 2)
Logical channel 3 (Channel 3)
Logical channel 4 (Channel 4)
Logical channel 5 (Channel 5)
Logical channel 6 (Channel 6)
Logical channel 7 (Channel 7)
Logical channel 8 (Channel 8)
CPU
Word device
2594
CPU
Word device
361
CPU
STOP
Network module
Logical channel 1 (Channel 1)
Logical channel 2 (Channel 2)
Logical channel 3 (Channel 3)
Logical channel 4 (Channel 4)
Interrupt program
Logical channel 5 (Channel 5)
Logical channel 6 (Channel 6)
I10
Logical channel 7 (Channel 7)
Logical channel 8 (Channel 8)
MELSEC-Q
Target station
Multiplexed Multiplexed
remote remote sub-
master master
station station
CPU
RECV
CPU
RECVS
Reference
section
1
1
1
1
1
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