Mitsubishi Electric MELSEC-A Series Manual page 198

5
REPLACEMENT OF THE MELSECNET/10 (REMOTE I/O NETWORK)
(b) For multiplexed remote master station and multiplexed remote sub-master station
Instruction Name
SEND Data sending
RECV Data receiving
Other station
READ
word device
SREAD
read
Other station
WRITE
word device
SWRITE
write
Requesting
transient
REQ
transmission to
other stations
5
- 32
Execution
station
QnPH QnPRH
CPU CPU
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
Channel 3
SEND
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
READ
Word device
2594
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
WRITE
Issues "remote RUN" and "clock data read/write" requests to other
stations.
CPU
Network module
REQ
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)
Word device
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Word device
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
Network module
Channel 1
Channel 2
Channel 3
STOP
Channel 4
Channel 5
Channel 6
Channel 7
Channel 8
: Can be used, × : Cannot be used
Target station
Multiplexed Multiplexed
remote remote
master sub-master
station station
CPU
RECV
CPU
2594
CPU
361
CPU
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